Well in a month or so I'm going to upgrade my tank. you folks are right, this IS addictive. I'm going to go for I think 30 gallons which is about the biggest my apartment can manage spacewise. I only have one definitely big enough and strong enough place where they are high enough above the floor, everything else is too small or too fragile or too near electrical things I can't turn off. I'm just wondering: since I am hoping my platys and corydoras catfish will be going in along with them, what other fish would go good with those in a community tank? I'd like interesting and colourful fish but not ones that will stress out, eat or be a nuisance to those I already have.