That's because no one in their right mind, who knows how to keep Ball Pythons, will use a 55 gallon tank. They are heavy, awful to clean, very difficult to keep correctly heated and humidified.

I would recommend you contact some big breeders out there and ask every single one who keeps their Ball Pythons together. If you eventually want a stressed out, egg bound, nutrient-depleted female, keep on doing what you're doing... There have been documented events of stress-induced cannibalism in Ball Pythons housed together, even if they had been together for years prior. WHY would you want to risk the health and well-being of your animals?

That being said, 55 gallon tanks are horrible for keeping ground dwelling reptiles. They don't have enough floor space, and you waste alot of electricity trying to heat the air to a normal range.

Do your snakes a favor, get 2 actual reptile cages, such as Vision, Animal Plastics, Boaphile, etc and separate them. Plastic is a much better insulator than glass is and will provide a more appropriate home for the snake(well insulated = easy to heat and humidify, and will remain stable, unlike glass). Glass will always try to be the same temp as the surrounding room temp. Think of it as your car on a very cold, wintery day, and you have the heat blasting. If you feel the window, it's still incredibly cold and remains that way regardless of the temp inside. What if that was your snake's tank and the snake spent alot of time pressed up against the glass? The snake could easily get a respiratory infection or regurgitate its food because of the extremely cold glass it is resting on.

Get either two tanks, two reptile-specific enclosures, or two plastic sweater boxes, and separate your snakes. You can save yourself and the snakes alot of stress... Just listen to the people on here who have over 40 years of experience, they know what they are talking about.