I'm moving in a few months and breaking down my 75 gallon polypterus tank. I want to start something new and I'm thinking I want to go with Eartheaters. I've kept many cichlids before but I don't know too much about geophagus genus. Could someone point me in the right direction of what kinds of eartheaters I could comfortably keep in a 75 tank? I'd like to do two or more types if possible. Any direction at all would be greatly appreciated