As I have mentioned before I am looking at buying a ball python sometime in July or August and I am curious about tank size. I have a friend that offered to sell me an old tank of hers cheap. It is a 55 gallon terrarium and has not been used in a while, she said it just needs to be cleaned and I should be set. I guess what I'm really asking is if a 55 gallon is an OK size for a ball python?