I live in Orange County CA, and have a 10-gal freshwater tank. I had 1 African Dwarf Frog, 4 Fancy Guppies, and a Tiger snail. All appeared to be doing well, then all but the frog and 1 guppy died. I added 1 guppy, a blue snail, and another little frog. The frog I'd had for awhile seemed to be...