Well just a note the thermostat you are using in the picture isn't that accurate. I would strongly suggest finding a harbor frieght close by and picking up a non contact thermometer. They cost about 10 to 20 dollars for cheap ones and around 50 for a pretty descent one. You want to know the temp of the substrate. most uths get up to about 120+ degrees. Most people get belly burns from that heat. if it isn't getting hot enough with the uth you have i would suggest getting a larger one. most uth units are cheaper to run than that light anyway. Plus you have the ability to increase the coverage over the top of your cage to increase humidity