When I got my first 2 ball pythons I had them in a glass aquarium also, Id mist daily and when it got close to shedding time I would add a Shed box. Small circular bowl filled with sphagnum moss and wet it down well. 1 snake used it and it worked perfectly, the other I had to place in there and close up the lid for her so she had to be in there.
I use bins now in my rack and don't have that problem.