OK, so I switched to the digital thermometer/humidity gauge from the regular one. Now the temp says it's about five degrees cooler on both ends. I have a heat lamp that I use. I'm not switching to a UTH so don't mention it. I'm using an infrared light for heat. Is there a better bulb to use? Like a ceramic one, for more heat? The lamp is graded up to 75 watts. I've got the "probe" under his hide. and the readout on the cool side. HELP!