Hello, I have been reading up on PH levels and how it affects fish, and other peoples experiences. But I need to know how to either lower the PH down or get the fish to calm down. its a 10 gal, 1 Dalmatian, 3 tetra (small), and a small bottom feeder. I have also moved into a new apartment and the tank has new water, (on a side note, these weren't the original fish upon moving in. originally it was 2 balloon belly molly's, 3 tetras, and medium bottom feeder which even with new treated water from the apartment, ended up wiping out all but 1 tetra. 3 on impact, and the rest about a few weeks later.) the dalmatian molly cant stop stressing itself out spinning in circles. HELP!