I have a 12 gallon tank that is cycling. Then a 20 gallon hexagon tank with 2 black neon tetras, 2 zebra danios, and a breeder box with molly fry! Next is a 29 gallon with 6 platys, 1 dalmation molly, 2 tetras, 2 guppys and an african dwarf frog. The tanks have been set up about a month now...