Another point is that when the male is sexually mature he will get stressed out constantly trying to breed with your female, he will most likely go off food for long periods of time while he trys to mate, and can lose alot of whieght as he will be constantly moving and buggin your female. Not a healthy situation, even most breeders will only place them together during the normal breeding season and then seperate them again, being together all the time can really stress them out. Just get two tubs like was already suggested and place them on top of eachother to save on space...