Interesting thread... I started out keeping my ball pythons in glass tanks with hides. They hid all day long, it was like keeping a bunch of empty tanks around. And they didn't eat much at all. When I first put them in the rack system their appetite was incredible, they all would eat anything, probably would have eaten my shoe if I threw it in there!
A lot of people on this site complain about snake problems and most of those same people keep them in glass aquariums, I think just the opposite, it's cruel to keep them in glass tanks. It's like digging up an earthworm and putting it in an empty glass tank for everyone to see thinking it's going to thrive. Ball pythons live in the dark under termite mounds, not in glass tanks on your kitchen table LOL. A grey tub in a rack is about as close to their natural environment as you can get. If you are keeping ball pythons please ditch the glass aquariums! And remember, it's a snake not a fish!