It's a 55 gallon screen top, the same as my BP is in. He is pushing 4 foot, and the local herp dealer said I should be put plenty of stuff and 2 or more hides in the tank because it was a little big for him. I am guessing then that a 6ish foot sanke would be very happy in it, possily even 8ft? That's part of the reason for posting this. As to Sampson's walk-about that was a incorrectly set cage clamp. I have solved the problem by using a more user -friendly method. I got the 2 of the velcro 'belts' full rolls of carpet come strapped in from work I had to cut them down but considering what that carpet weighs I think it's safe to say he'll stay in his home from now on. It also requires quite a bit less dextarity to manage and as I have some lingering issues (made worse in winter) from an old injury it makes more scence. He also came home right after finishing his shed, so I'm going to call that a husbandry win, or at least pure tummy love.