new to the forums, but not totally new to fish. as of last month i have upgraded to a 55 gal tank. the current residents are: 3 Dalmatian Mollies, 1 Mickey Mouse Platy, 1 Bumblebee Catfish, 1 Pleco, 1 Angelfish, 1 African Dwarf Frog. I used to have a 29 gal tank with 2 Koi, 1 Shubunkin, 2...