I've tested my tapwater and it has a ph of 7.2 perfect for what i have. But my tank ph is up at 7.6 and that a little higher than i would like. Over time with water changes will the ph in my tank drop to something close to 7.2? I've tried some chemical that are supose to lower the ph to 7.0 and they've done nothing. I've tried using water softeners to help that chemical lower the ph. I would rather not be put all these chemical in my tank.