ORP stands for “Oxidation Reduction Potential” while Redox stands for “Reduction/Oxidation.” These two terms are interchangeable. Redox is NOT useful in the freshwater aquarium.


ORP stands for “Oxidation Reduction Potential” while Redox stands for “Reduction/Oxidation.” These two terms are interchangeable. Redox is NOT useful in the freshwater aquarium.

Un-bagging Fish for the Aquarium: It is a myth that one MUST acclimate fish in a store bag slowly to the parameters of the new aquarium’s water!

Rapid Thermal and pH Shifts in the aquarium is not deadly as many believe. Rapid changes don’t shock or stress fish!

“Stability” isn’t Important: The going mantra is that tropical fish require “stability” and “constancy” of pH and temperature. Supposedly any rapid change over 0.2 pH or 2 degrees F. temperature will “shock”, “stress” and possibly kill the fish. This idea is simply a myth,

Fish Tolerance to pH: One common myth of fishkeeping is that generations in captivity have created strains of fish more tolerant of temperature, pH and hardness excursions. Fish breeders do NOT do “selective breeding” for fish conditions such as pH.

Trace Additives for the aquarium are not needed as trace elements are already present in the fish food you give!

Salts in the Water of an Aquarium: The “salt” (elemental) analysis of different biotope waters can be left to the perfectionists among us. They aren’t that important unless you are using RO water or distilled water.

KH and Cycling in an Aquarium: Carbonate hardness (KH) is important for nitrifying bacteria. For every 10 ppm of ammonia converted to nitrate very roughly 71.4 ppm (71.4 KH or 4 dKH) of carbonate is used up.

“Carbonate hardness” or “KH” is a confusing term because it does not refer directly to what most people associate with the term “hardness”. “

General hardness, GH, in the water basically reflect the amount of the elements Calcium and Magnesium one has in the water.