Quote Originally Posted by spitzu View Post
According to ReptileTubs.com the CB-30 tubs are 7 7/8" tall, and the CB-70 tubs are 6" tall. Like Mike said, you would have to build it to the size of the CB-30s and use lids with your CB-70s. I would personally hate that.

You're either going to need to build 2 different racks or let the snakes grow up in the CB-70s. I would do the latter and just add more hides.
I would go with the larger tubs as well and get more hides. I have 200g snakes in 36qt tubs and they are doing very well.