I'm trying to figure out what size tank to put them in to breed. Ideally I'd like another 125. Someone at work is giving me a "100 gallon" and 2 x 30 gallons for free. Talking to her though, it sounds like it's gonna end up being a 55 gallon. Thats ok if it is, I can at least separate them from the Citrinellus before things go nuts. A 75 would be better though, a 100 would be GREAT.