ya i dont use a UTH and i only use a black 50 watt bulb as my heat source.. i still strongly believe i dont need a UTH.. im sure it would help but i dont think its an absolute need for my BP to properly live.. i mean if i really did need it then my snake would have trouble digesting and would be gettin sick by now since i dont have a UTH but i havent had any problems so thats why i still argue with that issue.. but maybe when i get some money in my hands ill probably get a UTH just to make it a little better