tropicfishman
Aquarium Advice Addict
so what is it in the test kits that make them react with thte water?
Big C said:They are all different regents (chemicals), depending on the kit, that react with other chemicals in the water -not with the water itself. Some of them are quite harmful i.e. sodium hydroxide and sodium hypochlorite are used to test for ammonia and hydrochloric acid to test for NO3. Most of them also use other chemicals to make the reaction visible, i.e. phenolphtaleina, and the like.
TomK2 said: