This is a really old thread but I'm a new member and I actually have 3 tanks.
I breed Red Cherry Shrimp and Assassin snails and sell those regularly to fish stores and online or craigslist. I used to breed African Cichlids too but it takes too much space.
Right now I have a 10 gallon heavily planted tank with ~200 RCS and 1 Galaxy Rasbora
I also have a 29 gallon heavily planted tank with 4 Celebes Rainbows, 4 Cherry Barbs, 40+ RCS, 20+ Assassin Snails, 2 Dwarf Gourami, 1 Male German Blue Ram, 1 Triple Red Cacatoides Apistogramma, 1 Long Fin Albino Bristlenose Pleco, and 1 Clown Pleco.
My third tank is a 50 gallon Lake Malawi Mbuna Cichlid tank. I have 14 various Mbuna Cichlids, all male, 1 Bristlenose Pleco and a Featherfin Catfish.