if you get a static thermostat,the lights will just constantly cycle on and off, if you get a proportional themostat, it will proportionaly dim your bulb to adjust the heat, in doing so, it will change the spectrum of your bulb as well , not a big deal, if you are using it for an infrared anyway , but would be an issue for a bright basking lamp. a better solution , particularly if you are on a budget is to choose more appropriate lighting for your cage , if you use bulbs that are barely strong enough (wattage wise) to achieve the temps you want , then no thermostat is required , a much simpler setup and saves you money to use on other cham issues,and less worry about heat build up, i am familiar with that cage and i would recomend getting the zoomed uva (although uva output is minimal) incandescent basking bulb (in 25-40w) depending on the species, ir's do not make the best cham basking bulbs anyway . it is commonly believed that there is a psycological benefit from a bright (but not cfl bright ) basking light, a single 25w uva basing light and a single reptisun 5.0 linear tube,will do you just fine , no thermostat required