For the hot side I'm using a CHE, and for the cool side I have a infrared. Both have dimmers but they were almost full blast to keep the temps up. I went to the lumber yard and bought some foam to put around the back and sides of the tank. I had to buy a 4'X8' sheet of foam but it was only $7 lol. So far thats helping and I can cut it down to the CHE for now. And I'm also using the wet towel method but its drying out halfway through the day. We'll see how it is today at lunch.