Is your lamp on a timer? Makes life easier if it is the. What Ellie May was talking about is a heat mat (when your tort gets bigger) and the RHP(radient heat panel) are mounted on the ceiling of the enclosure. Also used when it's time to build a bigger night box for your tort.I'm only using a CHE as temp control as the enclosure size is just 32x19 inches. I do have another uva lamp but it's main purpose is just to produce light and also to add 1 to 2 celcius at daytime. I think using thermostat on that lamp is pretty irrelevant. So I guess I'll only need one for now.