Will start off by saying only 1 holds water to about the half way point then leaks like a SOB, and the other has the opening front so wont hold. I got the locking, opening front from a buddy who rehomed his ball python, and the other I've had for a while, I've kept ball bythons, a couple beardies, I had a red footed tortoise, and a crested gecko when I was younger. So by no means an expert but not a noob either. I'm wondering what you guys would recommend for one of these tanks or both maybe, I've been thinking about a boa since I read they would he fine in a 40b for a few years as they grow so slowly, and also leopard geckos but I read they do better in small tanks with little open space. Any ideas or input greatly appreciated! Nothing is out of the picture just looking for some cool pet ideas! and feel free to post pictures of your pets too just becuase!!!