If you don't already have a setup for him, a tub is THE WAY TO GO!!! I have my BP and Dumeril's Boa in Sterilite tubs, and it's so awesome. No problems with humidity, and I run both of their tubs heat off of 2' of 11" flexwatt heat tape. Whenever I need to travel, just put them in their bags, throw the tubs in the back of my jeep and I'm off!! AND, absolutely no problems with humidity