I just got a new ball python today and am looking for a 10 - 20 gallon tank for her. So if anybody used to have snakes and no longer need an old cage, let me know what you have because I'm needing something soon.
Brandon, I'd go with as big of one as you can. 10 is to small and it'll outgrow a 20 in no time. By the time you get the things in the tank(water, hiding box w/ warm and cold side) the tank seems to get smaller. PMif you need any info.