Not sure if you have the snake in the tub yet, but I would take it out while you are experimenting if you do. I find that I have to use an oil filled space heater in the room during the winter to keep ambient temps up. Can't wait til it warms up here cause I know it's putting a hurting on my electric bill running it all the time. Without the space heater the ambient temp only gets to about 76*. Good luck!