I totally disagree. I had my adult male in a 50cm high enclosure and was small for him. I moved him recently to his new 100cm high enclosure and he is climbing and using all the space. I would say for an adult 50cm height is the minimum if you want to keep it in a proper way.
Just adding in, there are many ways to keep. Some we each prefer more than others, but there is nothing about ball pythons that makes 50cm "proper" or "minimum". What about you give them an entire room? A whole acre? Grasslands and termite mounds and forests?
Last edited by redshepherd; 06-01-2017 at 02:54 PM.