You could do something like what I did for my juvenile bullfrogs. A raised land area supported by pvc with a ramp going up. Of course, I screwed mine up and the plexiglass sides gave out, dumping dirt into their water. If you do it this way, you should make sure the plexiglass "bottom" is up against 3 sides of the tank. That's the way I'm going to redo it.




Sorry no better pics.