If in fact the tap reading of ammonia is 4.0 then that is what is bad for the fish along with the 2.0 nitrIte reading. Really though I wouldn't trust many pet stores they are there to make money after all, legit or non-legit. Do you drink your water?wait seriously where do you live, and did thay say what was in the tap water that is bad for fish?
personally i would just use tap water. the pet store might just be trying to sell you something you don't need.
ill pay its only a 5 gallon tank and 85c a gallonThe article I just posted talked about spring water - of course teh main drawback of that is cost.
i used the API liquid test kitI don't think I'd want to drink that tap water if the ammonia was that high.
Did you test your tap water yourself? If so, what kind of test did you use?
I'm just wondering where in the world would have tap water with that much ammonia in it.
i live in floridaI'm assuming you live in the US- but you should be able to get similar info even in Canada!!
FYI, RO/DI = reverse osmosis /deionized water
distilled water is distilled not the same