Well, I am planning on expanding and I could probably use the 20 gal that I have her in right now for some cool geckos or something along those lines. The racks kind of seem a little weird to me though. It dosn't seem like the snakes have enough space to move around (and Isabelle does like to climb around, which apparently isn't very normal). I'm leaning a little bit more towards the tubs than the tanks and racks at this point but I would like to see as many answers as possible!