So I have 3 Fish Tanks, a 20 gallon, 29 gallon, and a 50 gallon. in my 50 gallon I have a total of 10 convicts (Babies, I know I will have to get a bigger tank soon). in my 29 I have 2 angelfish, 9 nean tetras, 3 ghost shrimp, 1 blue gourami. in my 20 I have 9 platies, and 3 guppies. I want to...