If it makes sense, can you place the snake in your closet with the UTH and possibly a space heater. By placing the tub in the closet and keeping the door closed you will actually decrease the size of the area that you need to keep warm, closing the door to the closet will work as an insulator and hopefully help to increase the snake's ambient room temperature.

Let us know if this works for you.

Brian Gundy
For Goodness Snakes
408-981-6694
fgsnakes@sbcglobal.net