Sorry no one answered you yet. These are beautiful snakes! I don't know much about them, but in terms of set up for a tub, you can still use a heat lamp above it but make sure it is not touching the plastic or heating it up too much. You can use flex-watt tape, a heating pad, or a uth on the bottom as long as you make sure that doesn't heat up too much either - raise the tub from the surface some or use a dimmer/rheostat.

If you decide to get him, please post pictures!

Good luck.