You know i probibly should just break down and buy a human heat pad. I have one of those small zoomed ones that i have had for a long time and its actualy stuck to the shelf and not the plastic so it doesn't get too hot or maybe it needs to cover more surface area. I dont have mesh on it now but i can put the same stuff as i put on my other one. In actuality i really want to stay away from the lights they kill the humidity in these plastic containers. I use aspen bedding about 1/2" all around but he likes to rearange it the way he likes it. I just noticed this mourning that the ambient temp was 76 so that freaked me out i don't need an RI on my hands.