1. EnderUK

    What happens to the sulphate?

    Okay to part question, I'm sure one of you intelligent people can tell me. I stick in MgSO4 and CaSO4 into my tank what happens to the left over SO4? Is it part of the pollution and one reason to do water changes? Also if I changed to CaCl what would happen to the chlorine? just gas off I'm...