I don't really see the point of using glass tanks in a rack setup.

If you want big stackable cages the only way to go is plastic reptile cages like these:



These cages are made by animal plastics and will be a much better option

http://www.apcages.com/home/

I would recommend the T8 for ball pythons.

Alternatively You can get racks with really big tubs ARS comes to mind:

http://www.arscaging.com/reptilesys.html

Animal Plastics will make custom racks to fit whatever you want as well.


For your question you an adult BP needs 4 square feet of floor space. Cage height really doesn't matter as they are ground dwelling snakes.