I have an ARS 70 rack and they say that's perfect for adult ball pythons. I also have an ARS 80 rack on the bottom, I'm planning on using the bigger tubs for pairs of adults for breeding. I just put a dwarf retic in one of my ARS 80 tubs, he won't last very long in there LOL. FYI you can use your tanks for breeding rats!
I also have an ars7030 They are about 33L X 5.25H X 17W that is about a 41qt tub. I keep all mine in there. The smaller ones I just clutter up the tub more until they get bigger. My big female has plenty of room. Once they hit about 5-800g I don't use hides.
Snakes 0.1 Butter
0.1 Het Clown/Ghost
1.1 Pastel 100% Het Clown
1.1 Pied
1.0 Bee
1.0 Fire/Spider
1.0 Normal
1.0 Pastave
1.0 Albino Snow Corn
1.0 Albino Black Pastel