I have 3 aquariums, at the moment only one is set up. It's only a 10 gal but I only have I fish in it. Once I move I plan on setting up the other 2 tanks, one 35 gal and one 40 gal and then I will get more fish. I used to have gold fish and catfish. All I have right now is a plecostamus (however you spell it) and he's big enough that he needs the bigger tank.