a UTH (Under Tank Heater) is the heating pad. Honestly if you have 2 heat lamps the UTH is not necessary
I would change it you so both of the lamps are infra-red (this specific bulb I posted a link to before is he best one on the market)
the proper hot side temperature is 88-92 degrees 24/7
the proper cool side temperature is 78-82 24/7
Only one Acu-Rite thermometer is necessary, the sensor probe will go on the hot side, and the unit itself will sit on the cool side. (the unit has a second thermometer sensor inside as well as the hydrometer sensor)
This is how I have my enclosures set up (I have PVC enclosures made by a company called Animal Plastics, but it will work the same in a tank
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