{"id":100206,"date":"2023-10-23T07:48:15","date_gmt":"2023-10-23T05:48:15","guid":{"rendered":"https:\/\/aquainfo.nl\/?p=100206"},"modified":"2023-10-23T07:50:12","modified_gmt":"2023-10-23T05:50:12","slug":"7-1-1-cost-of-filter-media","status":"publish","type":"post","link":"https:\/\/aquainfo.nl\/en\/7-1-1-cost-of-filter-media\/","title":{"rendered":"7.1.1. Cost of Filter Media"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">This article has been rewritten about a dozen times. The availability and price of all the aquarium media have been on a rollercoaster. Up-down, up-down. Trying to pin the numbers down has been difficult.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">And there is a big problem with something called \u201cbuying in bulk\u201d. If one has a large aquarium with a large sump one can buy two cubic feet of K1 media for a cost of about $1 a liter. If you have a small bottle filter and you want to buy a liter of K1 you will pay $15 a liter. By the same token, you cannot buy plastic pot scrubbers in true \u201cbulk\u201d So you will pay about $0.50 to $1.00 per pot scrubber regardless of the amount you need.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"765\" height=\"453\" src=\"https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/10\/OB-Peacock11.jpg\" alt=\"OB Peacock\" class=\"wp-image-100209\" srcset=\"https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/10\/OB-Peacock11.jpg 765w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/10\/OB-Peacock11-300x178.jpg 300w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/10\/OB-Peacock11-150x89.jpg 150w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/10\/OB-Peacock11-600x355.jpg 600w, https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/10\/OB-Peacock11-441x261.jpg 441w\" sizes=\"(max-width: 765px) 100vw, 765px\" \/><figcaption class=\"wp-element-caption\">OB Peacock<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">And this varies a huge amount depending on where you live. Plastic pot scrubbers are dirt cheap in some countries and very expensive in others.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">So here is the \u201clatest and greatest\u201d data with the caveat that this might have all changed. What will not change is the huge difference between the top media and the lowest media. Not only is the lower media very expensive, but it also doesn\u2019t work very well. This double-whammy effect is just huge.<\/p>\n\n\n\n<style type=\"text\/css\">\n.tg  {border-collapse:collapse;border-spacing:0;}\n.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg .tg-z0iz{background-color:#fffc9e;text-align:left;vertical-align:top}\n.tg .tg-yofg{background-color:#9aff99;text-align:left;vertical-align:top}\n.tg .tg-ltxa{background-color:#ffccc9;text-align:left;vertical-align:top}\n.tg .tg-4aw5{background-color:#96fffb;text-align:left;vertical-align:top}\n.tg .tg-0lax{text-align:left;vertical-align:top}\n<\/style>\n<table class=\"tg\">\n<thead>\n  <tr>\n    <th class=\"tg-4aw5\">Biomedia<\/th>\n    <th class=\"tg-4aw5\">Media<br>cost per<br>100<br>ft<sup>2<\/sup> area<\/th>\n    <th class=\"tg-4aw5\">Canister<br>Filter cost<br>per 100 ft<sup>2<\/sup><br>area<\/th>\n    <th class=\"tg-4aw5\">Total Cost<\/th>\n  <\/tr>\n<\/thead>\n<tbody>\n  <tr>\n    <td class=\"tg-yofg\">30 ppi foam in<br>canister or sump <\/td>\n    <td class=\"tg-yofg\">$ 16 &#8211; $ 22 <\/td>\n    <td class=\"tg-yofg\">$ 50<\/td>\n    <td class=\"tg-yofg\">$ 66 &#8211; $ 72 <\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-yofg\">plastic media (K1, <br>K1 micro, etc.)<\/td>\n    <td class=\"tg-yofg\">$ 12 &#8211; $ 18<\/td>\n    <td class=\"tg-yofg\">$ 80<\/td>\n    <td class=\"tg-yofg\">$ 92 &#8211; $ 98<\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-yofg\">plastic pot<br>scrubbers<\/td>\n    <td class=\"tg-yofg\">$ 15 &#8211; $ 40<\/td>\n    <td class=\"tg-yofg\">$ 75<\/td>\n    <td class=\"tg-yofg\">$ 90 &#8211; $ 115<\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-z0iz\">aquarium gravel <\/td>\n    <td class=\"tg-z0iz\">$ 60 &#8211; $ 100 <\/td>\n    <td class=\"tg-z0iz\">$ 150<\/td>\n    <td class=\"tg-z0iz\">$ 210 &#8211; $ 250 <\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-z0iz\">polypropylene &amp;<br>EVA filter pads<\/td>\n    <td class=\"tg-z0iz\">$ 30 &#8211; $ 60<\/td>\n    <td class=\"tg-z0iz\">$ 160<\/td>\n    <td class=\"tg-z0iz\">$ 190 &#8211; $ 220 <\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-z0iz\">Bio balls<\/td>\n    <td class=\"tg-z0iz\">$ 40 &#8211; $ 65<\/td>\n    <td class=\"tg-z0iz\">$ 200<\/td>\n    <td class=\"tg-z0iz\">$ 190 &#8211; $ 315<\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-ltxa\">pre-sized 1\/2 inch <br>lava rock or scoria <\/td>\n    <td class=\"tg-ltxa\">$ 160 &#8211; $ 200 <\/td>\n    <td class=\"tg-ltxa\">$ 700<\/td>\n    <td class=\"tg-ltxa\">$ 860 &#8211; $ 900  <\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-ltxa\">Matrix and Biohome <\/td>\n    <td class=\"tg-ltxa\">$ 600 &#8211; $ 1,400 <\/td>\n    <td class=\"tg-ltxa\">$ 600<\/td>\n    <td class=\"tg-ltxa\">$ 1,200 &#8211; $ 2,000 <\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-ltxa\">Ceremic media<\/td>\n    <td class=\"tg-ltxa\">$ 400 &#8211; $ 1,200 <\/td>\n    <td class=\"tg-ltxa\">$ 800<\/td>\n    <td class=\"tg-ltxa\">$ 1,200 &#8211; $ 2,000<\/td>\n  <\/tr>\n  <tr>\n    <td class=\"tg-0lax\" colspan=\"4\">Cost of filtermedia<\/td>\n  <\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<p class=\"wp-block-paragraph\">This reflects the cost of canister filtering an aquarium with a one-pound Oscar in it. An Oscar needs 100 square feet of surface area per pound to avoid hole-in-the-head syndrome. With a media like carefully cut Poret Foam inserts one can use a small cheap canister. With something like ceramic rings one will need two or even three large canisters filled with the rings. Poret foam turns out to be\u00a0TWENTY-FIVE<strong> TIMES<\/strong>\u00a0more cost-effective than ceramic rings. Interesting!<\/p>\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","protected":false},"excerpt":{"rendered":"<p>The cost of filter media is usually not compared to their effectiveness. This article compares it for you!<\/p>\n","protected":false},"author":566,"featured_media":96634,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[55862],"tags":[],"class_list":["post-100206","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\/07\/filter-media.jpg",768,425,false],"thumbnail":["https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/07\/filter-media-150x83.jpg",150,83,true],"medium":["https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/07\/filter-media-300x166.jpg",300,166,true],"medium_large":["https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/07\/filter-media.jpg",768,425,false],"large":["https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/07\/filter-media.jpg",768,425,false],"1536x1536":["https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/07\/filter-media.jpg",768,425,false],"2048x2048":["https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/07\/filter-media.jpg",768,425,false],"commercegurus-pdp-large":["https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/07\/filter-media.jpg",768,425,false],"commercegurus-plp-mobile":["https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/07\/filter-media-441x244.jpg",441,244,true],"woocommerce_thumbnail":["https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/07\/filter-media-300x166.jpg",300,166,true],"woocommerce_single":["https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/07\/filter-media-600x332.jpg",600,332,true],"woocommerce_gallery_thumbnail":["https:\/\/aquainfo.nl\/wp-content\/uploads\/2023\/07\/filter-media-150x83.jpg",150,83,true]},"post_excerpt_stackable_v2":"<p>The cost of filter media is usually not compared to their effectiveness. This article compares it for you!<\/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\/100206","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=100206"}],"version-history":[{"count":0,"href":"https:\/\/aquainfo.nl\/en\/wp-json\/wp\/v2\/posts\/100206\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aquainfo.nl\/en\/wp-json\/wp\/v2\/media\/96634"}],"wp:attachment":[{"href":"https:\/\/aquainfo.nl\/en\/wp-json\/wp\/v2\/media?parent=100206"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aquainfo.nl\/en\/wp-json\/wp\/v2\/categories?post=100206"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aquainfo.nl\/en\/wp-json\/wp\/v2\/tags?post=100206"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}