{"id":102654,"date":"2023-12-20T07:33:56","date_gmt":"2023-12-20T06:33:56","guid":{"rendered":"https:\/\/aquainfo.nl\/?p=102654"},"modified":"2023-12-24T08:36:28","modified_gmt":"2023-12-24T07:36:28","slug":"5-5-3-4-cost-of-conditioners","status":"publish","type":"post","link":"https:\/\/aquainfo.nl\/en\/5-5-3-4-cost-of-conditioners\/","title":{"rendered":"5.5.3.4. Cost of Conditioners"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">My recommendation with conditioners is simple:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"has-vivid-red-color has-text-color has-link-color has-medium-font-size wp-elements-1 wp-block-paragraph\"><strong>Buy ONLY Conditioners that say \u201cSodium Thiosulfate\u201d on the Bottle in the Ingredients List. Then use 5X the Recommended Dosage.<\/strong><\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">When I used to have chlorinated water for a 60 gallon tank 50% water change I would first off leave the fish in the aquarium. I would drain 30 gallons of water. Then I would take the amount of thiosulfate conditioner which would, per the bottle, condition 30\u00d75 or 150 gallons of water and add it to the 30 gallons that was left in the aquarium. Thiosulfate is just very harmless, even at a 10x concentration. Then I would refill the tank with 30 gallons of water above 70 degrees. Easy.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_87_1 ez-toc-wrap-center counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/aquainfo.nl\/en\/5-5-3-4-cost-of-conditioners\/#Cost_of_Conditioners\" >Cost of Conditioners<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/aquainfo.nl\/en\/5-5-3-4-cost-of-conditioners\/#Cheapest_Conditioner\" >Cheapest Conditioner<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/aquainfo.nl\/en\/5-5-3-4-cost-of-conditioners\/#Further_Reading\" >Further Reading<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/aquainfo.nl\/en\/5-5-3-4-cost-of-conditioners\/#533_Water_Conditioners\" >5.3.3. Water Conditioners<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/aquainfo.nl\/en\/5-5-3-4-cost-of-conditioners\/#5531_%E2%80%9CAmmonia_Detoxifying%E2%80%9D_Claims\" >5.5.3.1. \u201cAmmonia Detoxifying\u201d Claims<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/aquainfo.nl\/en\/5-5-3-4-cost-of-conditioners\/#5532_Seachem_Prime_and_Safe\" >5.5.3.2. Seachem Prime and Safe<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/aquainfo.nl\/en\/5-5-3-4-cost-of-conditioners\/#5533_Water_Conditioner_Chemistry\" >5.5.3.3. Water Conditioner Chemistry<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/aquainfo.nl\/en\/5-5-3-4-cost-of-conditioners\/#5535_Water_Conditioner_Testing\" >5.5.3.5. Water Conditioner Testing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/aquainfo.nl\/en\/5-5-3-4-cost-of-conditioners\/#5536_Review_Of_Water_Conditioners\" >5.5.3.6. Review Of Water Conditioners<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cost_of_Conditioners\"><\/span><strong>Cost of Conditioners<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">There is a huge variation in the effective cost of various conditioners. The most expensive product on the shelves is one hundred times more costly than the least expensive product on the shelves. This is huge.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Calculating the cost of each conditioner for the purposes of doing a 50% water change on a 200 gallon aquarium is as follows:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Product<\/th><th>Cost\/100<br>Gallons<\/th><\/tr><\/thead><tbody><tr><td>Top Fin<\/td><td>$ 10.59<\/td><\/tr><tr><td>Amquel Plus<\/td><td>$ 0.84<\/td><\/tr><tr><td>Tetra AquaSafe<\/td><td>$ 0.83<\/td><\/tr><tr><td>Aqueon<\/td><td>$ 0.36<\/td><\/tr><tr><td>Prime<\/td><td>$ 0.35<\/td><\/tr><tr><td>Fritz Guard<\/td><td>$ 0.26<\/td><\/tr><tr><td>API<\/td><td>$ 0.12<\/td><\/tr><tr><td>Safe<\/td><td>$ 0.016<\/td><\/tr><tr><td>Homemade<\/td><td>$ 0.012<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">Conditioner Cost<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"872\" height=\"555\" src=\"https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Satanoperca-jurupari.jpg\" alt=\"Satanoperca jurupari\" class=\"wp-image-102659\" srcset=\"https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Satanoperca-jurupari.jpg 872w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Satanoperca-jurupari-300x191.jpg 300w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Satanoperca-jurupari-150x95.jpg 150w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Satanoperca-jurupari-600x382.jpg 600w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Satanoperca-jurupari-768x489.jpg 768w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Satanoperca-jurupari-441x281.jpg 441w\" sizes=\"(max-width: 872px) 100vw, 872px\" \/><figcaption class=\"wp-element-caption\">Satanoperca jurupari<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The calculations by product are as follows (calculated for doing a 50% water change to a 200-gallon aquarium):<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Top Fin (Thiosulfate)&nbsp;<em>\u201cUse 10 mL for each 10 U.S. gallons\u201d<\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>(10 ml x 10)\/28.3 ml\/ounce = 3.53 ounces needed<\/li>\n\n\n\n<li>4 ounces cost $11.99<\/li>\n\n\n\n<li>One-ounce costs $3<\/li>\n\n\n\n<li>$3 x 3.53 = $10.59 to treat 50% of 200 gallons<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Note this product only comes in the small containers and it is an obvious rip-off. The author checked these numbers five times and they are valid.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">AmQuel Plus (Hydroxymethanesulfinate)&nbsp;<em>\u201cAdd 10 drops per gallon, 1 teaspoon per 10 gallons, 1 liquid ounce per 60 gallons, or 1 cup per 480 gallons.\u201d<\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>(100 x1)\/60 = 1.67 ounces needed<\/li>\n\n\n\n<li>16 ounces = $7.99 or $0.50 per ounces<\/li>\n\n\n\n<li>$0.50 x 1.67 = $0.84 to treat 50% of 200 gallons<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tetra AquaSafe (Hydroxymethanesulfinate)&nbsp;<em>\u201cAdd two teaspoons for every 10 gallons of water\u201d.<\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>(10 ml x 10)\/28.3 ml\/ounce = 3.53 ounces needed<\/li>\n\n\n\n<li>8 ounces cost $7.97<\/li>\n\n\n\n<li>One ounce costs $7.97\/33.8 = $0.236 per ounce<\/li>\n\n\n\n<li>$0.236 x 3.53 = $0.83 to treat 50% of 200 gallons<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Aqueon Water Conditioner (Thiosulfate)&nbsp;<em>\u201cUse attached dosage cap and add 5 ml (1 tsp) per 10 gallons of water\u201d.<\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>(5 ml x 10)\/28.3 ml\/ounce = 1.77 ounces needed<\/li>\n\n\n\n<li>16 ounces cost $3.29<\/li>\n\n\n\n<li>One-ounce costs $3.29\/16 = $0.206<\/li>\n\n\n\n<li>$0.206 x 1.77 = $0.36 to treat 50% of 200 gallons<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\" id=\"attachment_23297\"><img decoding=\"async\" width=\"1024\" height=\"617\" src=\"https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Axolotl2-1024x617.jpg\" alt=\"Axolotl\" class=\"wp-image-102783\" srcset=\"https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Axolotl2-1024x617.jpg 1024w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Axolotl2-300x181.jpg 300w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Axolotl2-150x90.jpg 150w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Axolotl2-600x361.jpg 600w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Axolotl2-768x463.jpg 768w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Axolotl2-990x596.jpg 990w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Axolotl2-441x266.jpg 441w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Axolotl2.jpg 1099w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Axolotl<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Prime (dithionite)&nbsp;<em>\u201cUse 1 capful (5 mL) of Seachem Prime for each 200 L (50 US gallons) of new or replacement water.\u201d<\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>(5 ml x 2)\/28.3 ml\/ounce = 0.353 ounces needed<\/li>\n\n\n\n<li>500 milliliter costs $17.89<\/li>\n\n\n\n<li>500\/28.35 = 17.64 ounces costs $17.89<\/li>\n\n\n\n<li>One-ounce costs $17.89\/17.64 =$1.00 per ounce<\/li>\n\n\n\n<li>$1 x 0.353 = $0.35 to treat 50% of 200 gallons<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Fritz Guard (Proprietary)&nbsp;<em>\u201cUse 1 cap (1tsp\/5ml) per 50 U.S. Gallons (189 L).&nbsp; $11.82 for 16 ounces\u201d<\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>(5 ml x2)\/28.3 ml\/ounce = 0.353 ounces needed<\/li>\n\n\n\n<li>16 ounces costs $11.82<\/li>\n\n\n\n<li>One-ounce costs $11.82\/16 = $0.74 per ounce<\/li>\n\n\n\n<li>$0.74 x 0.353 = $0.26 to treat 50% of 200 gallons<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">API Tap Water Conditioner (Thiosulfate)&nbsp;<em>\u201cAdd 1 ml for each 20 gallons of aquarium water\u201d.<\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>(1 x 5)\/28.3 ml\/ounce = 0.177 ounce needed<\/li>\n\n\n\n<li>16 ounces cost $11.19<\/li>\n\n\n\n<li>One-ounce costs $0.70<\/li>\n\n\n\n<li>$0.70 x 0.177 = $0.12 to treat 50% of 200 gallons<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\" id=\"attachment_23299\"><img decoding=\"async\" width=\"762\" height=\"447\" src=\"https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Crayfish-Alabama-Dwarf-Cambarellus-sp.jpg\" alt=\"Crayfish Alabama Dwarf Cambarellus sp\" class=\"wp-image-102785\" srcset=\"https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Crayfish-Alabama-Dwarf-Cambarellus-sp.jpg 762w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Crayfish-Alabama-Dwarf-Cambarellus-sp-300x176.jpg 300w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Crayfish-Alabama-Dwarf-Cambarellus-sp-150x88.jpg 150w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Crayfish-Alabama-Dwarf-Cambarellus-sp-600x352.jpg 600w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Crayfish-Alabama-Dwarf-Cambarellus-sp-441x259.jpg 441w\" sizes=\"(max-width: 762px) 100vw, 762px\" \/><figcaption class=\"wp-element-caption\">Crayfish Alabama Dwarf Cambarellus sp<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Safe (dithionite) \u201c<em>Use 200 mg of Safe\u2122 (included scoop) per each 200 L (50 US gallons)\u201d<\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>200 mg x 2 = 0.400 grams needed for 200-gallon 50% water change<\/li>\n\n\n\n<li>250 grams cost $9.99<\/li>\n\n\n\n<li>One-gram costs $0.04<\/li>\n\n\n\n<li>$0.04 x 0.4 = $0.016 to treat 50% of 200 gallons<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">DIY solution of Sodium Thiosulfate is 32 grams of sodium thiosulfate in one cup 8 ounces of water. Add one teaspoon of the solution per 50 gallons of the water to be treated.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>32\/28.3 = 1.13 ounces added to eight ounces.<\/li>\n\n\n\n<li>16 ounces sodium thiosulfate costs $3.99<\/li>\n\n\n\n<li>one-ounce cost $0.25.<\/li>\n\n\n\n<li>13 ounces costs $0.28.<\/li>\n\n\n\n<li>8 ounces = 48 teaspoons<\/li>\n\n\n\n<li>$0.28\/48 = $0.0058 per teaspoon<\/li>\n\n\n\n<li>$0.0058 x 2 = $0.012 to treat 50% of 200 gallons<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">With the notable exception of the Top Fin product, none of these products will exactly break the bank. So most hobbyists don\u2019t worry too much about the cost of their conditioners. If one has a lot of aquariums this will become more important.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\" id=\"attachment_24142\"><img decoding=\"async\" width=\"1024\" height=\"443\" src=\"https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Pseudacanthicus-sp-L065-Blizzard-Cactus-Pleco-1024x443.jpg\" alt=\"Pseudacanthicus sp L065 Blizzard Cactus Pleco\" class=\"wp-image-102787\" srcset=\"https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Pseudacanthicus-sp-L065-Blizzard-Cactus-Pleco-1024x443.jpg 1024w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Pseudacanthicus-sp-L065-Blizzard-Cactus-Pleco-300x130.jpg 300w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Pseudacanthicus-sp-L065-Blizzard-Cactus-Pleco-150x65.jpg 150w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Pseudacanthicus-sp-L065-Blizzard-Cactus-Pleco-600x259.jpg 600w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Pseudacanthicus-sp-L065-Blizzard-Cactus-Pleco-768x332.jpg 768w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Pseudacanthicus-sp-L065-Blizzard-Cactus-Pleco-990x428.jpg 990w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Pseudacanthicus-sp-L065-Blizzard-Cactus-Pleco-441x191.jpg 441w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Pseudacanthicus-sp-L065-Blizzard-Cactus-Pleco.jpg 1312w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Pseudacanthicus sp L065 Blizzard Cactus Pleco<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cheapest_Conditioner\"><\/span><strong>Cheapest Conditioner<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Note the cheapest conditioner can be made by dissolving 32 grams of sodium thiosulfate in one cup of water (tap water is fine). You don\u2019t want to mix up too much as the solution does go bad with time (like two years time). Add one teaspoon of the solution per 50 gallons of the water to be treated. Since there are 100 drops in a teaspoon, this is a rate of two drops per gallon.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The math on this is lengthy but pretty easy. This math is designed to neutralize 1 ppm of either chlorine or chloramine as tested by total chlorine test kits.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sodium thiosulfate pentahydrate Na<sub>2<\/sub>S<sub>2<\/sub>O<sub>3<\/sub>(5H<sub>2<\/sub>O) has a molecular weight of 248.<\/li>\n\n\n\n<li>Chlorine has a molecular weight of 35.5.<\/li>\n\n\n\n<li>248\/35.5 = 7.<\/li>\n\n\n\n<li>Na<sub>2<\/sub>S<sub>2<\/sub>O<sub>3<\/sub>&nbsp;+&nbsp; 4 Cl<sub>2<\/sub>&nbsp;+ 5 H<sub>2<\/sub>O -&gt; 2 NaHSO<sub>4&nbsp;<\/sub>+ 8 HCl<\/li>\n\n\n\n<li>One molecule of thiosulfate neutralizes eight atoms of chlorine<\/li>\n\n\n\n<li>So each 1 ppm of chlorine needs 7\/8 ppm or 0.875 ppm of sodium thiosulfate.<\/li>\n\n\n\n<li>Each 50 gallons will have 189,271 grams of water.<\/li>\n\n\n\n<li>1 ppm in 50 gallons is 189,271\/1,000,000 = 0.19 grams<\/li>\n\n\n\n<li>At 1 ppm of chlorine (normally the \u201cmaximum\u201d dosage of chlorine in most municipal water supplies) there will be 0.19 grams of chlorine in fifty gallons of water.<\/li>\n\n\n\n<li>0.19 x 0.875 = 0.66 grams of sodium thiosulfate required to neutralize 1 ppm chlorine in 50 gallons of tap water.<\/li>\n\n\n\n<li>So one teaspoon of the conditioner will need 0.66 grams of sodium thiosulfate in it.<\/li>\n\n\n\n<li>There are 48 teaspoons in a cup.<\/li>\n\n\n\n<li>48 x 0.66 =&nbsp; 32 grams<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Municipal water suppliers aim for 0.5 ppm in the water. So normally one is safe at these levels of conditioner, neutralizing twice the usual level of chlorine.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\" id=\"attachment_21217\"><img decoding=\"async\" width=\"623\" height=\"491\" src=\"https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Super-Black-Angel-Pterophyllum-scalare.jpg\" alt=\"Super Black Angel Pterophyllum scalare\" class=\"wp-image-102789\" srcset=\"https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Super-Black-Angel-Pterophyllum-scalare.jpg 623w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Super-Black-Angel-Pterophyllum-scalare-300x236.jpg 300w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Super-Black-Angel-Pterophyllum-scalare-150x118.jpg 150w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Super-Black-Angel-Pterophyllum-scalare-600x473.jpg 600w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Super-Black-Angel-Pterophyllum-scalare-441x348.jpg 441w\" sizes=\"(max-width: 623px) 100vw, 623px\" \/><figcaption class=\"wp-element-caption\">Super Black Angel Pterophyllum scalare<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">But the water can be much higher in chlorine. Municipalities commonly \u201cchlorine pulse\u201d and go to 4 ppm, which requires twice this dosage. And I have personally measured 11 ppm, which smelled like a pool that had just been chlorinated. So I\u2019m not very confident the 4 ppm EPA limit is followed at all times. This is why I recommend using a 5X dosage for thiosulfate conditioners. Because thiosulfate is such a mild reducing agent, a 5X dosage is harmless to fish.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Check with your local water company as to the levels of chlorine and chloramine they might \u201cpulse\u201d with. In some localities, it might be wise to test the water with a total chlorine pool test kit before adding the conditioner.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Note that some do the math on various recommended levels from the internet and get all confused as to the exact amount of thiosulfate to use per cup of water. The following recommendations can be gleaned for the web: Jonah\u2019s Aquarium 28 grams, Ken\u2019s Fish 31 grams and Joey Mullen 26 grams. These differences just reflect differences of calculation and formula. It\u2019s not important.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Do not add the crystals of sodium thiosulfate directly to the aquarium. During the time it takes for the thiosulfate crystals to dissolve the fish will be exposed to chlorine. And&nbsp;<strong>ANY<\/strong>&nbsp;exposure of the fish to chlorine is to be avoided.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\" id=\"attachment_23300\"><img decoding=\"async\" width=\"971\" height=\"590\" src=\"https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Neocaridina-davidi-Red-Cherry-Shrimp.jpg\" alt=\"Neocaridina davidi Red Cherry Shrimp\" class=\"wp-image-102791\" srcset=\"https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Neocaridina-davidi-Red-Cherry-Shrimp.jpg 971w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Neocaridina-davidi-Red-Cherry-Shrimp-300x182.jpg 300w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Neocaridina-davidi-Red-Cherry-Shrimp-150x91.jpg 150w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Neocaridina-davidi-Red-Cherry-Shrimp-600x365.jpg 600w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Neocaridina-davidi-Red-Cherry-Shrimp-768x467.jpg 768w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Neocaridina-davidi-Red-Cherry-Shrimp-441x268.jpg 441w\" sizes=\"(max-width: 971px) 100vw, 971px\" \/><figcaption class=\"wp-element-caption\">Neocaridina davidi Red Cherry Shrimp<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Further_Reading\"><\/span>Further Reading<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">There are some aquarium hobbyists who are interested in delving deep into the science and the calculations behind all aspects of the hobby. For those who are so inclined, the following is pertinent:<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"533_Water_Conditioners\"><\/span><a href=\"https:\/\/aquainfo.nl\/en\/5-5-3-aquarium-water-conditioners\/\" data-type=\"link\" data-id=\"https:\/\/aquainfo.nl\/en\/5-5-3-aquarium-water-conditioners\/\">5.3.3. Water Conditioners<\/a><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5531_%E2%80%9CAmmonia_Detoxifying%E2%80%9D_Claims\"><\/span><a href=\"https:\/\/aquainfo.nl\/en\/5-5-3-1-ammonia-detoxifying-chemicals-in-the-aquarium\/\" data-type=\"link\" data-id=\"https:\/\/aquainfo.nl\/en\/5-5-3-1-ammonia-detoxifying-chemicals-in-the-aquarium\/\">5.5.3.1. \u201cAmmonia Detoxifying\u201d Claims<\/a><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5532_Seachem_Prime_and_Safe\"><\/span><a href=\"https:\/\/aquainfo.nl\/en\/5-5-3-2-seachem-prime-and-seachem-safe\/\" data-type=\"link\" data-id=\"https:\/\/aquainfo.nl\/en\/5-5-3-2-seachem-prime-and-seachem-safe\/\">5.5.3.2. Seachem Prime and Safe<\/a><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5533_Water_Conditioner_Chemistry\"><\/span><a href=\"https:\/\/aquainfo.nl\/en\/5-5-3-3-conditioner-chemistry\/\" data-type=\"link\" data-id=\"https:\/\/aquainfo.nl\/en\/5-5-3-3-conditioner-chemistry\/\">5.5.3.3. Water Conditioner Chemistry<\/a><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5535_Water_Conditioner_Testing\"><\/span><a href=\"https:\/\/aquainfo.nl\/en\/5-5-3-5-conditioner-testing\/\" data-type=\"link\" data-id=\"https:\/\/aquainfo.nl\/en\/5-5-3-5-conditioner-testing\/\">5.5.3.5. Water Conditioner Testing<\/a><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5536_Review_Of_Water_Conditioners\"><\/span><a href=\"https:\/\/aquainfo.nl\/en\/5-5-3-6-review-of-water-conditioners-for-the-aquarium\/\" data-type=\"link\" data-id=\"https:\/\/aquainfo.nl\/en\/5-5-3-6-review-of-water-conditioners-for-the-aquarium\/\">5.5.3.6. Review Of Water Conditioners<\/a><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-startpagina-aquariumscience\"><a href=\"\/?cat_ID=55102\" data-type=\"link\" data-id=\"https:\/\/aquainfo.nl\/en\/category\/aquariumscience-en\/\">Startpage Aquariumscience<\/a><\/h2>\n\n\n<nav style=\"color: #005d94;background-color: #f4f9fd\" class=\"has-text-color has-background has-medium-font-size is-vertical wp-block-navigation is-layout-flex wp-container-core-navigation-is-layout-8cdb3485 wp-block-navigation-is-layout-flex\" aria-label=\"AquariumScience - Engels\"><ul style=\"color: #005d94;background-color: #f4f9fd\" class=\"wp-block-navigation__container has-text-color has-background has-medium-font-size is-vertical wp-block-navigation\"><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/1-aquarium-basics\/\"><span class=\"wp-block-navigation-item__label\">1. Aquarium Basics<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"1. Aquarium Basics submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/1-2-falsehoods-and-myths\/\"><span class=\"wp-block-navigation-item__label\">1.2. Falsehoods and Myths<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/1-3-false-marketing-claims\/\"><span class=\"wp-block-navigation-item__label\">1.3. False marketing claims<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/1-4-sources-of-data\/\"><span class=\"wp-block-navigation-item__label\">1.4. Sources of data<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"1.4. Sources of data submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/1-4-1-facebook-fake-accounts\/\"><span class=\"wp-block-navigation-item__label\">1.4.1. Facebook Fake Accounts<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/1-5-aquarium-options\/\"><span class=\"wp-block-navigation-item__label\">1.5. Aquarium options<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/1-6-aquarium-fast-fish-deaths\/\"><span class=\"wp-block-navigation-item__label\">1.6. Aquarium Fast Fish Deaths<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/1-7-aquarium-slow-fish-deaths\/\"><span class=\"wp-block-navigation-item__label\">1.7. Aquarium Slow Fish Deaths<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/2-aquarium-cycling\/\"><span class=\"wp-block-navigation-item__label\">2. Aquarium Cycling<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"2. Aquarium Cycling submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/2-1-fish-less-cycling\/\"><span class=\"wp-block-navigation-item__label\">2.1. Fish less cycling<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/2-2-many-ways-to-cycle\/\"><span class=\"wp-block-navigation-item__label\">2.2. Many Ways to Cycle<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/2-3-how-i-cycle-an-aquarium\/\"><span class=\"wp-block-navigation-item__label\">2.3. How I Cycle an aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/2-4-cycling-an-aquarium-with-ammonia\/\"><span class=\"wp-block-navigation-item__label\">2.4. Cycling an Aquarium with Ammonia<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/2-5-aquarium-fish-in-cycling\/\"><span class=\"wp-block-navigation-item__label\">2.5. Aquarium Fish-in Cycling<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"2.5. Aquarium Fish-in Cycling submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/2-5-2-rapid-fish-in-cycling\/\"><span class=\"wp-block-navigation-item__label\">2.5.2. Rapid Fish-in Cycling<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/2-6-not-cycling-an-aquarium-at-all\/\"><span class=\"wp-block-navigation-item__label\">2.6. Not Cycling an Aquarium at All<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/2-7-new-tank-syndrome\/\"><span class=\"wp-block-navigation-item__label\">2.7. New Tank-syndrome<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/2-8-bacteria-in-a-bottle\/\"><span class=\"wp-block-navigation-item__label\">2.8. Bacteria-in-a-bottle<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"2.8. Bacteria-in-a-bottle submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/2-8-1-bacteria-in-a-bottle-in-depth\/\"><span class=\"wp-block-navigation-item__label\">2.8.1. Bacteria in a Bottle in Depth<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/2-8-2-sludge-removing-bacteria-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">2.8.2. Sludge Removing Bacteria in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/2-9-instant-cycling-chemicals-for-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">2.9. Instant Cycling Chemicals for the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/2-10-nitrogen-cycle\/\"><span class=\"wp-block-navigation-item__label\">2.10. Nitrogen Cycle<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/2-11-inoculate-for-cycling\/\"><span class=\"wp-block-navigation-item__label\">2.11. Inoculate for Cycling<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/2-12-beneficial-bacteria\/\"><span class=\"wp-block-navigation-item__label\">2.12. Beneficial Bacteria<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/2-13-cycling-test\/\"><span class=\"wp-block-navigation-item__label\">2.13. Cycling Test<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/2-14-the-mature-aquarium\/\"><span class=\"wp-block-navigation-item__label\">2.14. The Mature Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/2-15-cycling-a-planted-aquarium\/\"><span class=\"wp-block-navigation-item__label\">2.15. Cycling a Planted Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/3-fish-food\/\"><span class=\"wp-block-navigation-item__label\">3. Fish Food<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"3. Fish Food submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/3-1-insignificance-of-food\/\"><span class=\"wp-block-navigation-item__label\">3.1. Insignificance of Food<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/3-2-fish-diet-specializations\/\"><span class=\"wp-block-navigation-item__label\">3.2. Fish Diet Specializations<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/3-3-amount-of-fish-food\/\"><span class=\"wp-block-navigation-item__label\">3.3. Amount of Fish Food<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/3-4-gel-fish-food\/\"><span class=\"wp-block-navigation-item__label\">3.4. Gel Fish Food<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/3-5-breaking-up-fish-food-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">3.5. Breaking Up Fish Food in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/3-6-dry-fish-food\/\"><span class=\"wp-block-navigation-item__label\">3.6. Dry Fish Food<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/3-7-banned-fish-food\/\"><span class=\"wp-block-navigation-item__label\">3.7. Banned Fish Food<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/3-8-fish-food-and-malawi-bloat\/\"><span class=\"wp-block-navigation-item__label\">3.8. Fish Food and Malawi Bloat<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/3-9-fish-food-and-gunk\/\"><span class=\"wp-block-navigation-item__label\">3.9. Fish Food and Gunk<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/4-temperature-ph-kh-and-gh\/\"><span class=\"wp-block-navigation-item__label\">4. Temperature, pH, KH and GH<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"4. Temperature, pH, KH and GH submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/4-1-importance-of-water-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">4.1. Importance of Water in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/4-2-aquarium-temperatures\/\"><span class=\"wp-block-navigation-item__label\">4.2. Aquarium temperatures<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/4-3-free-floating-bacteria-in-aquariums\/\"><span class=\"wp-block-navigation-item__label\">4.3. Free Floating Bacteria in Aquariums<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/4-4-aquarium-ph\/\"><span class=\"wp-block-navigation-item__label\">4.4. Aquarium pH<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"4.4. Aquarium pH submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/4-4-1-aquarium-ph-is-not-important\/\"><span class=\"wp-block-navigation-item__label\">4.4.1. Aquarium pH is Not Important<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/4-4-2-buffering-aquarium-water\/\"><span class=\"wp-block-navigation-item__label\">4.4.2. Buffering Aquarium Water<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/4-4-3-carbon-dioxide-and-ph-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">4.4.3. \u00a0Carbon Dioxide and pH in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/4-4-4-dropping-ph-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">4.4.4. Dropping pH in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/4-4-5-raising-ph-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">4.4.5. Raising pH in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/4-5-water-hardness-gh-and-kh-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">4.5. Water Hardness, GH and KH in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"4.5. Water Hardness, GH and KH in the Aquarium submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/4-5-1-general-hardness\/\"><span class=\"wp-block-navigation-item__label\">4.5.1. General Hardness<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/4-5-2-carbonate-hardness-kh-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">4.5.2. Carbonate Hardness, KH in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"4.5.2. Carbonate Hardness, KH in the Aquarium submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/4-5-2-1-kh-and-cycling-in-an-aquarium\/\"><span class=\"wp-block-navigation-item__label\">4.5.2.1. KH and Cycling in an Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/4-6-salts-in-the-water-of-an-aquarium\/\"><span class=\"wp-block-navigation-item__label\">4.6. Salts in the Water of an Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"4.6. Salts in the Water of an Aquarium submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/4-6-1-trace-additives-for-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">4.6.1. Trace Additives for the aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/4-7-fish-tolerance-to-ph\/\"><span class=\"wp-block-navigation-item__label\">4.7. Fish Tolerance to pH<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/4-8-stability-isnt-important\/\"><span class=\"wp-block-navigation-item__label\">4.8. \u201cStability\u201d isn\u2019t Important<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"4.8. \u201cStability\u201d isn\u2019t Important submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/4-8-1-rapid-thermal-and-ph-shifts-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">4.8.1. Rapid Thermal and pH Shifts in the aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/4-9-un-bagging-fish-for-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">4.9. Un-bagging Fish for the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/4-10-orp-or-redox-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">4.10. ORP or Redox in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/4-11-tank-syndromes\/\"><span class=\"wp-block-navigation-item__label\">4.11. Tank Syndromes<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/5-ammonia-nitrite-nitrate-and-chlorine\/\"><span class=\"wp-block-navigation-item__label\">5. Ammonia, Nitrite, Nitrate and Chlorine<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"5. Ammonia, Nitrite, Nitrate and Chlorine submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/5-2-safe-ammonia-levels\/\"><span class=\"wp-block-navigation-item__label\">5.2. Safe Ammonia Levels<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"5.2. Safe Ammonia Levels submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/5-2-1-ammonia-in-the-aquarium-in-depth\/\"><span class=\"wp-block-navigation-item__label\">5.2.1. Ammonia in the Aquarium in Depth<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/5-2-3-high-ammonia-spikes-in-an-aquarium\/\"><span class=\"wp-block-navigation-item__label\">5.2.3. High Ammonia Spikes in an Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/5-3-safe-nitrite-levels\/\"><span class=\"wp-block-navigation-item__label\">5.3. Safe Nitrite Levels<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"5.3. Safe Nitrite Levels submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/5-3-2-safe-nitrite-levels-in-the-aquarium-in-more-depth\/\"><span class=\"wp-block-navigation-item__label\">5.3.2. Safe Nitrite Levels in the Aquarium in More Depth<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/5-4-safe-nitrate-levels\/\"><span class=\"wp-block-navigation-item__label\">5.4. Safe Nitrate Levels<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"5.4. Safe Nitrate Levels submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/5-4-1-nitrate-in-depth\/\"><span class=\"wp-block-navigation-item__label\">5.4.1. Nitrate in Depth<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/5-5-chlorine-and-chloramine\/\"><span class=\"wp-block-navigation-item__label\">5.5. Chlorine and Chloramine<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"5.5. Chlorine and Chloramine submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/5-5-1-chlorination-in-the-aquarium-in-depth\/\"><span class=\"wp-block-navigation-item__label\">5.5.1. Chlorination in the Aquarium in Depth<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/5-5-2-chloramines-in-aquarium-water\/\"><span class=\"wp-block-navigation-item__label\">5.5.2. Chloramines in Aquarium Water<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"5.5.2. Chloramines in Aquarium Water submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/5-5-2-1-ammonia-in-chloramine-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">5.5.2.1. Ammonia in Chloramine in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/5-5-3-aquarium-water-conditioners\/\"><span class=\"wp-block-navigation-item__label\">5.5.3. Aquarium Water Conditioners<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"5.5.3. Aquarium Water Conditioners submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/5-5-3-1-ammonia-detoxifying-chemicals-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">5.5.3.1. Ammonia Detoxifying Chemicals in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/5-5-3-2-seachem-prime-and-seachem-safe\/\"><span class=\"wp-block-navigation-item__label\">5.5.3.2. Seachem Prime and Seachem Safe<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/5-5-3-3-conditioner-chemistry\/\"><span class=\"wp-block-navigation-item__label\">5.5.3.3. Conditioner Chemistry<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/5-5-3-4-cost-of-conditioners\/\"><span class=\"wp-block-navigation-item__label\">5.5.3.4. Cost of Conditioners<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/5-5-3-5-conditioner-testing\/\"><span class=\"wp-block-navigation-item__label\">5.5.3.5. Conditioner Testing<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/5-5-3-6-review-of-water-conditioners-for-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">5.5.3.6. Review of Water Conditioners for the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/5-5-4-stress-coat-products\/\"><span class=\"wp-block-navigation-item__label\">5.5.4. Stress Coat Products<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/6-filtration\/\"><span class=\"wp-block-navigation-item__label\">6. Filtration<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"6. Filtration submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/6-1-mechanical-filtration\/\"><span class=\"wp-block-navigation-item__label\">6.1. Mechanical Filtration<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"6.1. Mechanical Filtration submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/6-1-1-cleaned-mechanical-filtration\/\"><span class=\"wp-block-navigation-item__label\">6.1.1. Cleaned Mechanical Filtration<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/6-1-2-uncleaned-mechanical-filtration\/\"><span class=\"wp-block-navigation-item__label\">6.1.2. Uncleaned Mechanical Filtration<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/6-2-biofiltration\/\"><span class=\"wp-block-navigation-item__label\">6.2. Biofiltration<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"6.2. Biofiltration submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/6-2-1-detritus-explained\/\"><span class=\"wp-block-navigation-item__label\">6.2.1. Detritus Explained<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/6-2-2-brown-gunk\/\"><span class=\"wp-block-navigation-item__label\">6.2.2. Brown Gunk<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/6-2-3-cloudy-water\/\"><span class=\"wp-block-navigation-item__label\">6.2.3. Cloudy Water<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/6-3-over-filtration-in-an-aquarium\/\"><span class=\"wp-block-navigation-item__label\">6.3. Over-filtration in an Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/6-4-crystal-clear-water\/\"><span class=\"wp-block-navigation-item__label\">6.4. Crystal-Clear Water<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"6.4. Crystal-Clear Water submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/6-4-1-crystal-clear-water-in-depth\/\"><span class=\"wp-block-navigation-item__label\">6.4.1. Crystal-Clear Water in Depth<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/6-4-2-polishing-filtration-in-an-aquarium-filter\/\"><span class=\"wp-block-navigation-item__label\">6.4.2. Polishing Filtration in an Aquarium Filter<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/6-5-water-flow-rate-in-aquarium-filters\/\"><span class=\"wp-block-navigation-item__label\">6.5. Water Flow Rate in Aquarium Filters<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"6.5. Water Flow Rate in Aquarium Filters submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/6-5-1-function-of-flow-in-an-aquarium\/\"><span class=\"wp-block-navigation-item__label\">6.5.1. Function of Flow in an Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/6-5-2-substrate-as-a-filter\/\"><span class=\"wp-block-navigation-item__label\">6.5.2. Substrate as a Filter<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/6-6-aquaponic-filtration\/\"><span class=\"wp-block-navigation-item__label\">6.6. Aquaponic Filtration<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/6-7-nitrate-factory\/\"><span class=\"wp-block-navigation-item__label\">6.7. Nitrate Factory<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/6-8-thorough-cleaning-a-filter\/\"><span class=\"wp-block-navigation-item__label\">6.8. Thorough Cleaning a Filter<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"6.8. Thorough Cleaning a Filter submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/6-8-1-filter-cleaning-tests\/\"><span class=\"wp-block-navigation-item__label\">6.8.1. Filter Cleaning Tests<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/6-9-tap-water-rinsing\/\"><span class=\"wp-block-navigation-item__label\">6.9. Tap Water Rinsing<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/7-filter-media\/\"><span class=\"wp-block-navigation-item__label\">7. Filter Media<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"7. Filter Media submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/7-1-review-of-aquarium-filter-media\/\"><span class=\"wp-block-navigation-item__label\">7.1. Review of Aquarium Filter Media<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"7.1. Review of Aquarium Filter Media submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-1-1-cost-of-filter-media\/\"><span class=\"wp-block-navigation-item__label\">7.1.1. Cost of Filter Media<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-1-2-the-function-of-aquarium-filter-media\/\"><span class=\"wp-block-navigation-item__label\">7.1.2. The Function of Aquarium Filter Media<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/7-1-3-aquarium-filter-media-tests\/\"><span class=\"wp-block-navigation-item__label\">7.1.3. Aquarium Filter Media Tests<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"7.1.3. Aquarium Filter Media Tests submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-1-3-1-ammonia-oxidizing-test\/\"><span class=\"wp-block-navigation-item__label\">7.1.3.1. Ammonia Oxidizing Test<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-1-3-2-water-clarity-test-of-aquarium-filter-media\/\"><span class=\"wp-block-navigation-item__label\">7.1.3.2. Water Clarity Test of Aquarium Filter Media<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/7-2-individual-media-list\/\"><span class=\"wp-block-navigation-item__label\">7.2. Individual Media List<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"7.2. Individual Media List submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-2-1-polyester-floss\/\"><span class=\"wp-block-navigation-item__label\">7.2.1. Polyester Floss<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-2-2-foam-media\/\"><span class=\"wp-block-navigation-item__label\">7.2.2. Foam Media<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-2-3-k1-media\/\"><span class=\"wp-block-navigation-item__label\">7.2.3. K1 Media<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-2-4-pumice-perlite\/\"><span class=\"wp-block-navigation-item__label\">7.2.4. Pumice Perlite<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-2-5-aquarium-gravel\/\"><span class=\"wp-block-navigation-item__label\">7.2.5. Aquarium Gravel<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-2-6-pp-eva-pads-for-aquarium-filters\/\"><span class=\"wp-block-navigation-item__label\">7.2.6. PP EVA Pads for Aquarium Filters<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-2-7-bio-balls-aquarium-filter-media\/\"><span class=\"wp-block-navigation-item__label\">7.2.7. Bio Balls Aquarium Filter Media<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-2-8-pot-scrubbers-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">7.2.8. Pot Scrubbers in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-2-9-lava-rock-for-aquarium-filter-media\/\"><span class=\"wp-block-navigation-item__label\">7.2.9. Lava Rock for Aquarium Filter Media<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-2-10-growstone\/\"><span class=\"wp-block-navigation-item__label\">7.2.10. Growstone<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-2-11-ceramic-media-in-aquarium-filters\/\"><span class=\"wp-block-navigation-item__label\">7.2.11. Ceramic Media in Aquarium Filters<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-2-12-seachem-matrix-filter-media\/\"><span class=\"wp-block-navigation-item__label\">7.2.12. Seachem Matrix filter media<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-2-13-clay-balls\/\"><span class=\"wp-block-navigation-item__label\">7.2.13. Clay Balls<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-2-14-biohome-filter-media\/\"><span class=\"wp-block-navigation-item__label\">7.2.14. BioHome Filter Media<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-3-calculating-filter-media-volume-requirements\/\"><span class=\"wp-block-navigation-item__label\">7.3. Calculating Filter Media Volume Requirements<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/7-4-chemical-filtration-media-in-the-aquarium-filter\/\"><span class=\"wp-block-navigation-item__label\">7.4. Chemical Filtration Media in the Aquarium Filter<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"7.4. Chemical Filtration Media in the Aquarium Filter submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-4-2-activated-carbon-in-an-aquarium-filter\/\"><span class=\"wp-block-navigation-item__label\">7.4.2. Activated Carbon in an Aquarium Filter<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-4-3-ion-exchange-resins-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">7.4.3. Ion-Exchange Resins in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-4-4-zeolite-ammonia-removing-granules-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">7.4.4. Zeolite Ammonia Removing Granules in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-4-5-phosphate-removing-granules-for-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">7.4.5. Phosphate Removing Granules for the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-4-6-purigen-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">7.4.6. Purigen in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-4-7-poly-filter-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">7.4.7. Poly-Filter in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-5-denitrifying-media-biohome-and-denitrate-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">7.5. Denitrifying Media, Biohome and De*Nitrate in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/7-6-the-surface-area-requirements-for-aquarium-filter-media\/\"><span class=\"wp-block-navigation-item__label\">7.6. The Surface Area Requirements for Aquarium Filter Media<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/8-review-of-aquarium-filters\/\"><span class=\"wp-block-navigation-item__label\">8. Review of Aquarium Filters<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"8. Review of Aquarium Filters submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/8-1-review-of-aquarium-filters-in-depth\/\"><span class=\"wp-block-navigation-item__label\">8.1. Review of Aquarium Filters in Depth<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"8.1. Review of Aquarium Filters in Depth submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-1-1-aquarium-filter-test\/\"><span class=\"wp-block-navigation-item__label\">8.1.1. Aquarium Filter Test<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-2-hang-on-back-aquarium-filters\/\"><span class=\"wp-block-navigation-item__label\">8.2. Hang On Back Aquarium Filters<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/8-3-aquarium-canister-filters\/\"><span class=\"wp-block-navigation-item__label\">8.3. Aquarium Canister Filters<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"8.3. Aquarium Canister Filters submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-3-1-aquarium-canister-filters-in-depth\/\"><span class=\"wp-block-navigation-item__label\">8.3.1. Aquarium Canister Filters in Depth<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-3-2-do-it-yourself-canister-filters\/\"><span class=\"wp-block-navigation-item__label\">8.3.2. Do-it-yourself Canister Filters<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-3-3-fx-series-canister-filters\/\"><span class=\"wp-block-navigation-item__label\">8.3.3. FX Series Canister Filters<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-4-aquarium-sponge-filters\/\"><span class=\"wp-block-navigation-item__label\">8.4. Aquarium Sponge Filters<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/8-5-under-gravel-filters\/\"><span class=\"wp-block-navigation-item__label\">8.5. Under Gravel Filters<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"8.5. Under Gravel Filters submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-5-1-under-gravel-aquarium-filters-in-depth\/\"><span class=\"wp-block-navigation-item__label\">8.5.1. Under-Gravel Aquarium Filters in Depth<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-5-2-diy-undergravel-filter\/\"><span class=\"wp-block-navigation-item__label\">8.5.2. DIY Undergravel Filter<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/8-6-sump-aquarium-filters\/\"><span class=\"wp-block-navigation-item__label\">8.6. Sump Aquarium Filters<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"8.6. Sump Aquarium Filters submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-6-1-sump-aquarium-filters-in-depth\/\"><span class=\"wp-block-navigation-item__label\">8.6.1. Sump Aquarium Filters in Depth<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-6-2-designing-an-aquarium-static-sump-filter\/\"><span class=\"wp-block-navigation-item__label\">8.6.2. Designing an Aquarium Static Sump Filter<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-6-3-trickle-aquarium-filters\/\"><span class=\"wp-block-navigation-item__label\">8.6.3. Trickle Aquarium Filters<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-6-4-wet-dry-aquarium-filters\/\"><span class=\"wp-block-navigation-item__label\">8.6.4. Wet-Dry Aquarium Filters<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-6-5-fluidized-bed-sump-filters-for-aquariums\/\"><span class=\"wp-block-navigation-item__label\">8.6.5. Fluidized Bed Sump Filters for Aquariums<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-6-6-do-it-yourself-sump-filters-for-aquariums\/\"><span class=\"wp-block-navigation-item__label\">8.6.6. Do-it-yourself Sump Filters for Aquariums<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-6-7-foam-sump\/\"><span class=\"wp-block-navigation-item__label\">8.6.7. Foam Sump<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/8-7-other-filters\/\"><span class=\"wp-block-navigation-item__label\">8.7. Other Filters<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"8.7. Other Filters submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-7-1-sand-filters\/\"><span class=\"wp-block-navigation-item__label\">8.7.1. Sand Filters<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-7-2-high-performance-filters-for-aquariums\/\"><span class=\"wp-block-navigation-item__label\">8.7.2. \u201cHigh Performance\u201d Filters for Aquariums<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-7-3-hamburg-matten-aquarium-filter\/\"><span class=\"wp-block-navigation-item__label\">8.7.3. Hamburg Matten Aquarium Filter<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-7-4-aquarium-diatomaceous-earth-filters\/\"><span class=\"wp-block-navigation-item__label\">8.7.4. Aquarium Diatomaceous Earth Filters<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-7-5-do-it-yourself-aquarium-bottle-filters\/\"><span class=\"wp-block-navigation-item__label\">8.7.5. Do it yourself Aquarium Bottle Filters.<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-7-6-small-filters-for-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">8.7.6. Small Filters for the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-7-7-bottom-of-the-tank-matten\/\"><span class=\"wp-block-navigation-item__label\">8.7.7. Bottom of the Tank Matten<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-7-8-small-diy-aquarium-filters\/\"><span class=\"wp-block-navigation-item__label\">8.7.8. Small DIY Aquarium Filters<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-8-filter-and-media-design-for-aquariums\/\"><span class=\"wp-block-navigation-item__label\">8.8. Filter and Media Design for Aquariums<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/8-9-anaerobic-or-anoxic-reactors-as-an-aquarium-filter\/\"><span class=\"wp-block-navigation-item__label\">8.9. Anaerobic or Anoxic Reactors as an Aquarium Filter<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"8.9. Anaerobic or Anoxic Reactors as an Aquarium Filter submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-9-1-biocenosis-reactor\/\"><span class=\"wp-block-navigation-item__label\">8.9.1. Biocenosis Reactor<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-9-2-a-feasible-reactor-for-doing-anoxic-aquarium-filtration\/\"><span class=\"wp-block-navigation-item__label\">8.9.2. A Feasible Reactor for doing Anoxic Aquarium Filtration<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/8-9-3-assimilatory-denitrification\/\"><span class=\"wp-block-navigation-item__label\">8.9.3. Assimilatory Denitrification<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/9-aeration-of-an-aquarium\/\"><span class=\"wp-block-navigation-item__label\">9. Aeration of an Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"9. Aeration of an Aquarium submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/9-1-aeration-in-depth\/\"><span class=\"wp-block-navigation-item__label\">9.1. Aeration in Depth<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/9-2-turbulence-and-aeration-in-an-aquarium\/\"><span class=\"wp-block-navigation-item__label\">9.2. Turbulence and Aeration in an Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/9-3-airstone-aeration-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">9.3. Airstone Aeration in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"9.3. Airstone Aeration in the Aquarium submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/9-3-2-cleaning-aquarium-air-stones\/\"><span class=\"wp-block-navigation-item__label\">9.3.2. Cleaning Aquarium Air Stones<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/9-4-skimmers-and-spray-bars-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">9.4. Skimmers and Spray Bars in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/9-5-aquarium-aeration-and-temperature\/\"><span class=\"wp-block-navigation-item__label\">9.5. Aquarium Aeration and Temperature<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/10-diseases\/\"><span class=\"wp-block-navigation-item__label\">10. Diseases<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"10. Diseases submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-1-aquarium-diseases-in-general\/\"><span class=\"wp-block-navigation-item__label\">10.1. Aquarium Diseases in General<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/10-2-skin-protozoans\/\"><span class=\"wp-block-navigation-item__label\">10.2. Skin Protozoans<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"10.2. Skin Protozoans submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/10-2-2-ich-in-far-more-depth\/\"><span class=\"wp-block-navigation-item__label\">10.2.2. Ich in far more depth<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"10.2.2. Ich in far more depth submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-2-2-1-ich-in-depth\/\"><span class=\"wp-block-navigation-item__label\">10.2.2.1. Ich in Depth<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-2-2-2-ich-immunity\/\"><span class=\"wp-block-navigation-item__label\">10.2.2.2. Ich Immunity<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-2-2-3-ich-medication\/\"><span class=\"wp-block-navigation-item__label\">10.2.2.3. Ich Medication<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-2-2-4-ich-medications-in-more-depth\/\"><span class=\"wp-block-navigation-item__label\">10.2.2.4. Ich Medications in More Depth<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-2-2-5-ineffective-ich-medications\/\"><span class=\"wp-block-navigation-item__label\">10.2.2.5. Ineffective Ich Medications<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-2-2-6-filtration-of-ich\/\"><span class=\"wp-block-navigation-item__label\">10.2.2.6. Filtration of Ich<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-2-2-7-ich-and-heat\/\"><span class=\"wp-block-navigation-item__label\">10.2.2.7. Ich and Heat<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-2-3-velvet-in-aquarium-fish\/\"><span class=\"wp-block-navigation-item__label\">10.2.3. Velvet in Aquarium Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-2-4-epistylis-on-a-fish\/\"><span class=\"wp-block-navigation-item__label\">10.2.4. Epistylis on a Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-2-5-chilodonella-and-costia\/\"><span class=\"wp-block-navigation-item__label\">10.2.5. Chilodonella and Costia<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-2-6-tetrahymena\/\"><span class=\"wp-block-navigation-item__label\">10.2.6. Tetrahymena<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-2-7-cryptobia-in-fish\/\"><span class=\"wp-block-navigation-item__label\">10.2.7. Cryptobia in Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/10-3-bacterial-infections-in-fish\/\"><span class=\"wp-block-navigation-item__label\">10.3. Bacterial Infections in Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"10.3. Bacterial Infections in Fish submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-3-1-skin-ulcers-in-aquarium-fish\/\"><span class=\"wp-block-navigation-item__label\">10.3.1. Skin Ulcers in Aquarium Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-3-2-mouth-rot-in-aquarium-fish\/\"><span class=\"wp-block-navigation-item__label\">10.3.2. Mouth Rot in Aquarium Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-3-3-duck-lips-in-aquarium-fish\/\"><span class=\"wp-block-navigation-item__label\">10.3.3. Duck Lips in Aquarium Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-3-4-fin-rot-in-aquarium-fish\/\"><span class=\"wp-block-navigation-item__label\">10.3.4. Fin Rot in Aquarium Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-3-5-saddleback-in-fish\/\"><span class=\"wp-block-navigation-item__label\">10.3.5. Saddleback in Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-3-6-red-blotches-or-septicemia-in-aquarium-fish\/\"><span class=\"wp-block-navigation-item__label\">10.3.6. Red Blotches or Septicemia in Aquarium Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-3-7-white-eyes\/\"><span class=\"wp-block-navigation-item__label\">10.3.7. White Eyes<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-3-8-popeye\/\"><span class=\"wp-block-navigation-item__label\">10.3.8. Popeye<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-3-9-red-gills\/\"><span class=\"wp-block-navigation-item__label\">10.3.9. Red Gills<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-3-10-red-mouth-in-goldfish\/\"><span class=\"wp-block-navigation-item__label\">10.3.10. Red Mouth in Goldfish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-3-11-treating-bacterial-diseases-in-fish\/\"><span class=\"wp-block-navigation-item__label\">10.3.11. Treating Bacterial Diseases in Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/10-4-fish-tuberculosis\/\"><span class=\"wp-block-navigation-item__label\">10.4. Fish Tuberculosis<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"10.4. Fish Tuberculosis submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-4-1-fish-tb-in-depth\/\"><span class=\"wp-block-navigation-item__label\">10.4.1. Fish TB in Depth<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-5-hexamita-in-fish\/\"><span class=\"wp-block-navigation-item__label\">10.5. Hexamita in fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-6-flukes\/\"><span class=\"wp-block-navigation-item__label\">10.6. Flukes<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-7-fish-saprolegnia-or-fish-fungus\/\"><span class=\"wp-block-navigation-item__label\">10.7. Fish Saprolegnia or \u201cFish Fungus\u201d<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-8-lymphocystis-in-aquarium-fish\/\"><span class=\"wp-block-navigation-item__label\">10.8. Lymphocystis in Aquarium Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-9-anchor-worms\/\"><span class=\"wp-block-navigation-item__label\">10.9. Anchor Worms<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-10-black-spots-on-aquarium-fish\/\"><span class=\"wp-block-navigation-item__label\">10.10. Black Spots on Aquarium Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-11-tapeworms-in-aquarium-fish\/\"><span class=\"wp-block-navigation-item__label\">10.11. Tapeworms in Aquarium Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/10-12-nematodes-in-aquarium-fish\/\"><span class=\"wp-block-navigation-item__label\">10.12. Nematodes in Aquarium Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"10.12. Nematodes in Aquarium Fish submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-12-1-camallanus-in-aquarium-fish\/\"><span class=\"wp-block-navigation-item__label\">10.12.1. Camallanus In Aquarium Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-12-2-capillaria\/\"><span class=\"wp-block-navigation-item__label\">10.12.2. Capillaria<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-13-pests-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">10.13. Pests in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-14-fish-lice-on-aquarium-fish\/\"><span class=\"wp-block-navigation-item__label\">10.14. Fish Lice on Aquarium Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-15-dwarf-gourami-disease\/\"><span class=\"wp-block-navigation-item__label\">10.15. Dwarf Gourami Disease<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/10-16-graphite-disease-in-bettas\/\"><span class=\"wp-block-navigation-item__label\">10.16. Graphite Disease in Bettas<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/11-fish-disease-symptoms\/\"><span class=\"wp-block-navigation-item__label\">11. Fish Disease Symptoms<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"11. Fish Disease Symptoms submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/11-1-hole-in-the-head-syndrome\/\"><span class=\"wp-block-navigation-item__label\">11.1. Hole in the Head Syndrome<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"11.1. Hole in the Head Syndrome submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/11-1-1-hexamita-and-hith\/\"><span class=\"wp-block-navigation-item__label\">11.1.1. Hexamita and HITH<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/11-1-2-spots-on-the-head-of-fish\/\"><span class=\"wp-block-navigation-item__label\">11.1.2. Spots on the Head of Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/11-2-white-poop-in-aquarium-fish\/\"><span class=\"wp-block-navigation-item__label\">11.2. White Poop in Aquarium Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/11-3-malawi-bloat\/\"><span class=\"wp-block-navigation-item__label\">11.3. Malawi Bloat<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/11-4-dropsy\/\"><span class=\"wp-block-navigation-item__label\">11.4. Dropsy<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/11-5-hollow-belly\/\"><span class=\"wp-block-navigation-item__label\">11.5. Hollow Belly<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/11-6-swim-bladder-syndrome-in-tropical-fish\/\"><span class=\"wp-block-navigation-item__label\">11.6. Swim Bladder Syndrome in Tropical Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/11-7-shimmying-in-tropical-fish\/\"><span class=\"wp-block-navigation-item__label\">11.7 Shimmying in Tropical Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/11-8-twirling-in-tropical-fish\/\"><span class=\"wp-block-navigation-item__label\">11.8. Twirling in Tropical Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/11-9-spinal-deformities-in-aquarium-fish\/\"><span class=\"wp-block-navigation-item__label\">11.9. Spinal Deformities in Aquarium Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/11-10-white-skin-blotches-on-a-fish\/\"><span class=\"wp-block-navigation-item__label\">11.10. White Skin Blotches on a fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/11-11-red-skin-blotches\/\"><span class=\"wp-block-navigation-item__label\">11.11. Red Skin Blotches<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/11-12-neon-disease\/\"><span class=\"wp-block-navigation-item__label\">11.12. Neon Disease<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/11-13-slime-coat-syndrome-on-a-fish\/\"><span class=\"wp-block-navigation-item__label\">11.13. Slime Coat Syndrome on a Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/11-14-scaly-skin-on-a-fish\/\"><span class=\"wp-block-navigation-item__label\">11.14. Scaly Skin on a Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/11-15-fish-not-eating\/\"><span class=\"wp-block-navigation-item__label\">11.15. Fish not Eating<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/11-16-aggression-in-aquarium-fish\/\"><span class=\"wp-block-navigation-item__label\">11.16. Aggression in Aquarium Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/11-17-black-death-in-aquarium-fish\/\"><span class=\"wp-block-navigation-item__label\">11.17. Black Death in Aquarium Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/11-18-black-head-syndrome\/\"><span class=\"wp-block-navigation-item__label\">11.18. Black Head Syndrome<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/11-19-gas-bubble-disease\/\"><span class=\"wp-block-navigation-item__label\">11.19. Gas Bubble Disease<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/12-treatment-of-fish-disease-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">12. Treatment of Fish Disease in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"12. Treatment of Fish Disease in the Aquarium submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/12-1-basics-of-treatment-of-fish-diseases\/\"><span class=\"wp-block-navigation-item__label\">12.1. Basics of Treatment of Fish Diseases<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/12-2-treatments-summary-for-fish-diseases\/\"><span class=\"wp-block-navigation-item__label\">12.2. Treatments Summary for Fish Diseases<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/12-3-quarantine-tanks\/\"><span class=\"wp-block-navigation-item__label\">12.3. Quarantine Tanks<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/12-4-ineffective-medicines-for-fish-diseases\/\"><span class=\"wp-block-navigation-item__label\">12.4. Ineffective Medicines for Fish Diseases<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"12.4. Ineffective Medicines for Fish Diseases submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/12-4-1-natural-aquarium-medications\/\"><span class=\"wp-block-navigation-item__label\">12.4.1. \u201cNatural\u201d Aquarium Medications<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/12-4-2-salt-for-treating-fish-disease\/\"><span class=\"wp-block-navigation-item__label\">12.4.2. Salt for Treating Fish Disease<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/12-4-3-aquarium-dyes\/\"><span class=\"wp-block-navigation-item__label\">12.4.3. Aquarium Dyes<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/12-4-5-antiseptics-for-treating-fish-disease\/\"><span class=\"wp-block-navigation-item__label\">12.4.5. Antiseptics for Treating Fish Disease<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/12-4-6-furan-and-sulfa-drugs-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">12.4.6. Furan and Sulfa Drugs in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/12-4-7-quinine-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">12.4.7. Quinine in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/12-5-fish-dont-drink\/\"><span class=\"wp-block-navigation-item__label\">12.5. Fish Don\u2019t Drink<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/12-6-sterilization-of-aquariums\/\"><span class=\"wp-block-navigation-item__label\">12.6. Sterilization of Aquariums<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/12-7-making-medicated-fish-food-for-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">12.7. Making Medicated Fish Food for the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/12-8-euthanizing-a-fish\/\"><span class=\"wp-block-navigation-item__label\">12.8. Euthanizing a Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/12-9-avoiding-diseases-in-fish\/\"><span class=\"wp-block-navigation-item__label\">12.9. Avoiding Diseases in Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/12-10-the-shotgun-approach\/\"><span class=\"wp-block-navigation-item__label\">12.10. The Shotgun Approach<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/13-stocking\/\"><span class=\"wp-block-navigation-item__label\">13. Stocking<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"13. Stocking submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/13-1-stocking-opinions\/\"><span class=\"wp-block-navigation-item__label\">13.1. Stocking Opinions<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/13-2-calculating-stocking-ratio\/\"><span class=\"wp-block-navigation-item__label\">13.2. Calculating Stocking Ratio<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/13-3-lifespan-of-an-aquarium-fish\/\"><span class=\"wp-block-navigation-item__label\">13.3. Lifespan of an Aquarium Fish<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/14-equipment-for-the-tropical-aquarium\/\"><span class=\"wp-block-navigation-item__label\">14. Equipment for the Tropical Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"14. Equipment for the Tropical Aquarium submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/14-1-uv-sterilizers-for-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">14.1. UV Sterilizers for the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"14.1. UV Sterilizers for the Aquarium submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/14-1-1-aquarium-uv-in-depth\/\"><span class=\"wp-block-navigation-item__label\">14.1.1. Aquarium UV in Depth<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/14-1-2-selecting-an-aquarium-uv-unit\/\"><span class=\"wp-block-navigation-item__label\">14.1.2 Selecting an Aquarium UV Unit<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/14-2-aquarium-substrates\/\"><span class=\"wp-block-navigation-item__label\">14.2. Aquarium Substrates<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"14.2. Aquarium Substrates submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/14-2-1-sand-as-an-aquarium-substrate\/\"><span class=\"wp-block-navigation-item__label\">14.2.1. Sand as an Aquarium Substrate<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/14-2-2-gravel-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">14.2.2. Gravel in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/14-2-3-buffering-substrates-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">14.2.3. Buffering Substrates in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/14-2-4-anaerobic-myth-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">14.2.4. Anaerobic Myth in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/14-3-rocks-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">14.3. Rocks in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/14-4-lights-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">14.4. Lights in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"14.4. Lights in the Aquarium submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/14-4-1-aquarium-light-spectrums\/\"><span class=\"wp-block-navigation-item__label\">14.4.1. Aquarium Light Spectrums<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/14-4-2-obsolete-lighting-standards-for-aquariums\/\"><span class=\"wp-block-navigation-item__label\">14.4.2. Obsolete Lighting Standards for Aquariums<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/14-5-piping-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">14.5. Piping in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/14-6-aquarium-pump-design\/\"><span class=\"wp-block-navigation-item__label\">14.6. Aquarium Pump Design<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/14-7-overflow-devices-for-aquariums\/\"><span class=\"wp-block-navigation-item__label\">14.7. Overflow Devices for Aquariums<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/14-8-aquarium-heaters\/\"><span class=\"wp-block-navigation-item__label\">14.8. Aquarium Heaters<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/14-9-wavemakers-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">14.9. Wavemakers in the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/14-10-wood-in-an-aquarium\/\"><span class=\"wp-block-navigation-item__label\">14.10. Wood in an Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/14-11-fish-electrocution\/\"><span class=\"wp-block-navigation-item__label\">14.11. Fish Electrocution<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/14-12-silicone-rubber-for-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">14.12. Silicone Rubber for the Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/14-13-aquarium-electric-cost\/\"><span class=\"wp-block-navigation-item__label\">14.13. Aquarium Electric Cost<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/14-14-cleaning-old-aquariums\/\"><span class=\"wp-block-navigation-item__label\">14.14. Cleaning Old Aquariums<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/15-planted-aquariums\/\"><span class=\"wp-block-navigation-item__label\">15. Planted Aquariums<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"15. Planted Aquariums submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-1-planted-aquariums-in-depth\/\"><span class=\"wp-block-navigation-item__label\">15.1. Planted Aquariums in Depth<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-2-fish-for-a-planted-aquarium\/\"><span class=\"wp-block-navigation-item__label\">15.2. Fish for a Planted Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-3-fish-limitations-in-a-planted-aquarium\/\"><span class=\"wp-block-navigation-item__label\">15.3. Fish Limitations in a Planted Aquarium<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-4-types-of-planted-aquariums\/\"><span class=\"wp-block-navigation-item__label\">15.4. Types of Planted Aquariums<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/15-5-aquarium-fertilizing\/\"><span class=\"wp-block-navigation-item__label\">15.5. Aquarium Fertilizing<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"15.5. Aquarium Fertilizing submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-5-1-ready-made-fertilizers\/\"><span class=\"wp-block-navigation-item__label\">15.5.1. Ready Made Fertilizers<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-5-2-fertilizer-programs\/\"><span class=\"wp-block-navigation-item__label\">15.5.2. Fertilizer Programs<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-5-3-estimative-index\/\"><span class=\"wp-block-navigation-item__label\">15.5.3. Estimative Index<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-5-4-nh4-tabs-aquarium-fertilizer\/\"><span class=\"wp-block-navigation-item__label\">15.5.4. NH4 + Tabs Aquarium Fertilizer<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-5-5-diy-epiphytic-fertilizer\/\"><span class=\"wp-block-navigation-item__label\">15.5.5. DIY Epiphytic Fertilizer<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-5-6-fish-food-fertilizer\/\"><span class=\"wp-block-navigation-item__label\">15.5.6. Fish Food Fertilizer<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-5-7-diy-fertilizers\/\"><span class=\"wp-block-navigation-item__label\">15.5.7. DIY Fertilizers<\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/15-6-carbon-dioxide-and-plants-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">15.6. Carbon Dioxide and Plants in the Aquarium<\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"15.6. Carbon Dioxide and Plants in the Aquarium submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-6-1-low-tech-co2\/\"><span class=\"wp-block-navigation-item__label\">15.6.1. Low Tech CO2<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-6-2-kh-ph-co2-relationships-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">15.6.2. KH pH CO2\u00a0Relationships in the Aquarium<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-6-3-high-tech-co2-systems\/\"><span class=\"wp-block-navigation-item__label\">15.6.3. High Tech CO2 Systems<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-6-4-co2-from-food-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">15.6.4. CO2 From Food in the Aquarium<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-6-5-aquarium-liquid-carbon-products\/\"><span class=\"wp-block-navigation-item__label\">15.6.5. Aquarium Liquid Carbon Products<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-6-6-measuring-co2\/\"><span class=\"wp-block-navigation-item__label\">15.6.6. Measuring CO2<\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-7-substrates-for-the-planted-aquarium\/\"><span class=\"wp-block-navigation-item__label\">15.7. Substrates for the Planted Aquarium<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-8-walstad-aquarium\/\"><span class=\"wp-block-navigation-item__label\">15.8. Walstad Aquarium<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-9-high-tech-planted-aquariums\/\"><span class=\"wp-block-navigation-item__label\">15.9. High Tech Planted Aquariums<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-10-hybrid-planted-aquariums\/\"><span class=\"wp-block-navigation-item__label\">15.10. Hybrid Planted Aquariums<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-11-many-fish-many-plants\/\"><span class=\"wp-block-navigation-item__label\">15.11. Many Fish Many Plants<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-12-propagating-plants\/\"><span class=\"wp-block-navigation-item__label\">15.12. Propagating Plants<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-13-hau-planted-aquariums\/\"><span class=\"wp-block-navigation-item__label\">15.13. Hau Planted Aquariums<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-14-low-tech-planted-aquariums\/\"><span class=\"wp-block-navigation-item__label\">15.14. Low Tech Planted Aquariums<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-15-sterilizing-aquarium-plants\/\"><span class=\"wp-block-navigation-item__label\">15.15. Sterilizing Aquarium Plants<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-16-natural-or-balanced-aquariums\/\"><span class=\"wp-block-navigation-item__label\">15.16. \u201cNatural\u201d or \u201cBalanced\u201d Aquariums<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/15-17-father-fish-aquariums\/\"><span class=\"wp-block-navigation-item__label\">15.17. Father Fish Aquariums<\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/16-algae-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">16. Algae in the Aquarium<\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"16. Algae in the Aquarium submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/16-1-aquarium-algae-biology\/\"><span class=\"wp-block-navigation-item__label\">16.1. Aquarium Algae Biology<\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/16-2-controlling-aquarium-algae\/\"><span class=\"wp-block-navigation-item__label\">16.2. Controlling Aquarium Algae<\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"16.2. Controlling Aquarium Algae submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/16-2-1-algae-in-fish-only-tanks\/\"><span class=\"wp-block-navigation-item__label\">16.2.1. Algae in Fish Only Tanks<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/16-2-2-algae-in-high-tech-tanks\/\"><span class=\"wp-block-navigation-item__label\">16.2.2. Algae in High Tech Tanks<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/16-2-3-algae-in-low-tech-tanks\/\"><span class=\"wp-block-navigation-item__label\">16.2.3. Algae in Low Tech Tanks<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/16-2-4-algae-eaters-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">16.2.4. Algae Eaters in the Aquarium<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/16-2-5-the-algae-war-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">16.2.5. The Algae War in the Aquarium<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/16-2-6-chemical-algae-control-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">16.2.6. Chemical Algae Control in the Aquarium<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/16-2-7-chihiros-doctor\/\"><span class=\"wp-block-navigation-item__label\">16.2.7. Chihiros Doctor<\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/16-3-thread-algae-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">16.3. Thread Algae in the Aquarium<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/16-4-blue-green-algae-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">16.4. Blue-Green Algae in the Aquarium<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/16-5-black-beard-algae\/\"><span class=\"wp-block-navigation-item__label\">16.5. Black Beard Algae<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/16-6-staghorn-algae\/\"><span class=\"wp-block-navigation-item__label\">16.6. Staghorn Algae<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/16-7-aquarium-green-water\/\"><span class=\"wp-block-navigation-item__label\">16.7. Aquarium Green Water<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/16-8-brown-algae-in-freshwater-aquariums\/\"><span class=\"wp-block-navigation-item__label\">16.8. Brown Algae in Freshwater Aquariums<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/16-9-green-spot-algae\/\"><span class=\"wp-block-navigation-item__label\">16.9. Green Spot Algae<\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/16-10-water-mold-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">16.10. Water Mold in the Aquarium<\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"16.10. Water Mold in the Aquarium submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/16-10-1-white-fuzz-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">16.10.1. White Fuzz in the Aquarium<\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/16-11-aquarium-slime-molds\/\"><span class=\"wp-block-navigation-item__label\">16.11. Aquarium Slime Molds<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/16-12-red-spot-algae-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">16.12. Red Spot Algae in the Aquarium<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/16-13-a-few-aquarium-oddities\/\"><span class=\"wp-block-navigation-item__label\">16.13. A Few Aquarium Oddities<\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/17-aquarium-fish-selection\/\"><span class=\"wp-block-navigation-item__label\">17. Aquarium Fish Selection<\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"17. Aquarium Fish Selection submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/17-1-native-water-chemistries\/\"><span class=\"wp-block-navigation-item__label\">17.1. Native Water Chemistries<\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/17-2-biotopes\/\"><span class=\"wp-block-navigation-item__label\">17.2. Biotopes<\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"17.2. Biotopes submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/17-2-1-blackwater-biotope\/\"><span class=\"wp-block-navigation-item__label\">17.2.1. Blackwater Biotope<\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/17-3-blackwater-fish\/\"><span class=\"wp-block-navigation-item__label\">17.3. Blackwater Fish<\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/17-4-lake-malawi-cichlids\/\"><span class=\"wp-block-navigation-item__label\">17.4. Lake Malawi Cichlids<\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"17.4. Lake Malawi Cichlids submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/17-4-1-malawi-aquariums\/\"><span class=\"wp-block-navigation-item__label\">17.4.1. Malawi Aquariums<\/span><\/a><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/17-5-goldfish-aquarium\/\"><span class=\"wp-block-navigation-item__label\">17.5. Goldfish Aquarium<\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"17.5. Goldfish Aquarium submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/17-5-1-types-of-goldfish\/\"><span class=\"wp-block-navigation-item__label\">17.5.1. Types of Goldfish<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/17-5-2-size-of-goldfish\/\"><span class=\"wp-block-navigation-item__label\">17.5.2. Size of Goldfish<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/17-5-3-stocking-goldfish\/\"><span class=\"wp-block-navigation-item__label\">17.5.3. Stocking Goldfish<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/17-5-4-goldfish-care\/\"><span class=\"wp-block-navigation-item__label\">17.5.4. Goldfish Care<\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/17-6-guppies-and-livebearers\/\"><span class=\"wp-block-navigation-item__label\">17.6. Guppies and Livebearers<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/17-7-aquarium-bettas\/\"><span class=\"wp-block-navigation-item__label\">17.7. Aquarium Bettas<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/17-8-oscars-in-the-aquarium\/\"><span class=\"wp-block-navigation-item__label\">17.8 Oscars in the Aquarium<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/17-9-nano-aquariums\/\"><span class=\"wp-block-navigation-item__label\">17.9. Nano Aquariums<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/17-10-aquarium-shrimp\/\"><span class=\"wp-block-navigation-item__label\">17.10. Aquarium Shrimp<\/span><\/a><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/17-11-discus\/\"><span class=\"wp-block-navigation-item__label\">17.11. Discus<\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"17.11. Discus submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/17-11-1-discus-husbandry\/\"><span class=\"wp-block-navigation-item__label\">17.11.1. Discus Husbandry<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/17-11-2-filtration-for-discus\/\"><span class=\"wp-block-navigation-item__label\">17.11.2. Filtration for Discus<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/17-11-3-water-for-discus\/\"><span class=\"wp-block-navigation-item__label\">17.11.3. Water for Discus<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/17-11-4-food-for-discus\/\"><span class=\"wp-block-navigation-item__label\">17.11.4. Food for Discus<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/17-11-5-discus-pheromones\/\"><span class=\"wp-block-navigation-item__label\">17.11.5. Discus Pheromones<\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/17-11-6-breeding-discus\/\"><span class=\"wp-block-navigation-item__label\">17.11.6. Breeding Discus<\/span><\/a><\/li><\/ul><\/li><\/ul><\/li><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/18-aquarium-maintenance\/\"><span class=\"wp-block-navigation-item__label\">18. Aquarium Maintenance<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"18. Aquarium Maintenance submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li data-wp-context=\"{ &quot;submenuOpenedBy&quot;: { &quot;click&quot;: false, &quot;hover&quot;: false, &quot;focus&quot;: false }, &quot;type&quot;: &quot;submenu&quot;, &quot;modal&quot;: null, &quot;previousFocus&quot;: null }\" data-wp-interactive=\"core\/navigation\" data-wp-on--focusout=\"actions.handleMenuFocusout\" data-wp-on--keydown=\"actions.handleMenuKeydown\" data-wp-on--pointerenter=\"actions.openMenuOnHover\" data-wp-on--pointerleave=\"actions.closeMenuOnHover\" data-wp-watch=\"callbacks.initMenu\" tabindex=\"-1\" class=\"wp-block-navigation-item has-child open-on-hover-click wp-block-navigation-submenu\"><a class=\"wp-block-navigation-item__content\" href=\"https:\/\/aquainfo.nl\/en\/18-1-aquarium-water-changes\/\"><span class=\"wp-block-navigation-item__label\">18.1. Aquarium Water Changes<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><button data-wp-bind--aria-expanded=\"state.isSubmenuOpen\" data-wp-on--click=\"actions.toggleMenuOnClick\" aria-label=\"18.1. Aquarium Water Changes submenu\" class=\"wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle\" ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" viewBox=\"0 0 12 12\" fill=\"none\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M1.50002 4L6.00002 8L10.5 4\" stroke-width=\"1.5\"><\/path><\/svg><\/button><ul data-wp-on--focus=\"actions.openMenuOnFocus\" style=\"color:#005d94\" class=\"wp-block-navigation__submenu-container has-text-color has-background has-white-background-color wp-block-navigation-submenu\"><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/18-1-1-water-changes-in-depth\/\"><span class=\"wp-block-navigation-item__label\">18.1.1. Water Changes in Depth<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/18-1-3-water-change-water\/\"><span class=\"wp-block-navigation-item__label\">18.1.3. Water Change Water<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/18-1-2-aquarium-water-change-math\/\"><span class=\"wp-block-navigation-item__label\">18.1.2. Aquarium Water Change Math<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/18-1-4-softened-ro-di-tds\/\"><span class=\"wp-block-navigation-item__label\">18.1.4. Softened, RO, DI, TDS<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/18-2-drip-water-changes\/\"><span class=\"wp-block-navigation-item__label\">18.2. Drip Water Changes<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/18-3-cleaning-the-substrate\/\"><span class=\"wp-block-navigation-item__label\">18.3. Cleaning the Substrate<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/18-4-cleaning-a-filter\/\"><span class=\"wp-block-navigation-item__label\">18.4. Cleaning a Filter<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/18-5-heavy-stocked-maintenance\/\"><span class=\"wp-block-navigation-item__label\">18.5. Heavy Stocked Maintenance<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/18-6-old-tank-syndrome\/\"><span class=\"wp-block-navigation-item__label\">18.6. Old Tank Syndrome<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><li class=\"wp-block-navigation-item wp-block-navigation-link\"><a class=\"wp-block-navigation-item__content\"  href=\"https:\/\/aquainfo.nl\/en\/18-7-sick-tank-syndrome\/\"><span class=\"wp-block-navigation-item__label\">18.7. Sick Tank Syndrome<\/span><span class=\"wp-block-navigation-item__description\"> <\/span><\/a><\/li><\/ul><\/li><\/ul><\/nav>\n\n\n<p class=\"wp-block-paragraph\"><strong>Source<\/strong>: <a href=\"https:\/\/aquariumscience.org\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Aquariumscience.org<\/a> &#8211; David Bogert<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>There is a huge variation in the effective cost of various conditioners. The most expensive product on the shelves is one hundred times more costly than the least expensive product on the shelves. This is huge.<\/p>\n","protected":false},"author":566,"featured_media":102657,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[55862],"tags":[],"class_list":["post-102654","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aquariumscience"],"featured_image_urls_v2":{"full":["https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Cost-of-Conditioners-1.jpg",1024,396,false],"thumbnail":["https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Cost-of-Conditioners-1-150x58.jpg",150,58,true],"medium":["https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Cost-of-Conditioners-1-300x116.jpg",300,116,true],"medium_large":["https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Cost-of-Conditioners-1-768x297.jpg",768,297,true],"large":["https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Cost-of-Conditioners-1.jpg",1024,396,false],"1536x1536":["https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Cost-of-Conditioners-1.jpg",1024,396,false],"2048x2048":["https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Cost-of-Conditioners-1.jpg",1024,396,false],"commercegurus-pdp-large":["https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Cost-of-Conditioners-1-990x383.jpg",990,383,true],"commercegurus-plp-mobile":["https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Cost-of-Conditioners-1-441x171.jpg",441,171,true],"woocommerce_thumbnail":["https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Cost-of-Conditioners-1-300x116.jpg",300,116,true],"woocommerce_single":["https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Cost-of-Conditioners-1-600x232.jpg",600,232,true],"woocommerce_gallery_thumbnail":["https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/12\/Cost-of-Conditioners-1-150x58.jpg",150,58,true]},"post_excerpt_stackable_v2":"<p>There is a huge variation in the effective cost of various conditioners. The most expensive product on the shelves is one hundred times more costly than the least expensive product on the shelves. This is huge.<\/p>\n","category_list_v2":"<a href=\"https:\/\/aquainfo.nl\/en\/category\/aquariumscience\/\" rel=\"category tag\">AquariumScience<\/a>","author_info_v2":{"name":"David Bogert","url":"https:\/\/aquainfo.nl\/en\/author\/david-bogert\/"},"comments_num_v2":"0 comments","_links":{"self":[{"href":"https:\/\/aquainfo.nl\/en\/wp-json\/wp\/v2\/posts\/102654","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aquainfo.nl\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aquainfo.nl\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aquainfo.nl\/en\/wp-json\/wp\/v2\/users\/566"}],"replies":[{"embeddable":true,"href":"https:\/\/aquainfo.nl\/en\/wp-json\/wp\/v2\/comments?post=102654"}],"version-history":[{"count":0,"href":"https:\/\/aquainfo.nl\/en\/wp-json\/wp\/v2\/posts\/102654\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aquainfo.nl\/en\/wp-json\/wp\/v2\/media\/102657"}],"wp:attachment":[{"href":"https:\/\/aquainfo.nl\/en\/wp-json\/wp\/v2\/media?parent=102654"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aquainfo.nl\/en\/wp-json\/wp\/v2\/categories?post=102654"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aquainfo.nl\/en\/wp-json\/wp\/v2\/tags?post=102654"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}