I am asking things wrong. The question I have and do not understand is this.

Why is the pH of the water important if the alkalinity is close to nothing?

that is what I want to know.
I do not know if I fully understand what you put in quotes. Does that answer this question?

edit: it seems to support what I think
demoreal Reviewed by demoreal on . Tap vs Filtered Water I have general question between the waters. I know filtered water is just what I said filtered, but I still have to ph it down to get it right level. Cant I just do it the same with tap water or does tap water have to much other chemicals that can damage the babies. :jointsmile: Rating: 5