You need to seperate the babies when they are weaned so they don't breed themselves.. So the females all go into one tank, and the males all go into another. "the grow out tanks". Because you are raising them up for future breedings/holding them till feeding time or euthanization/raising them up to a larger size.. Do you feed f/t? The next size up is weaned. So you will need the extra tanks. You don't have to breed the female back to back, if you have to many. But if you feed f/t then I don't think that would be a problem. Just kill and freeze the extras.