You need a TSTAT probe inside under the substrate sitting on the bottom. Have it between 90-92. You will probably need to set the TSTAT around 96 or so to reach the inside temp of 90. This also depends on what enclosure you have and how thick the bottom is. I am guessing its a glass tank? Ambient air should be around 82-85 on the warm side. 77-80 on the cool side. 2 hides, one one the UTH and one on the cool side. Need a water bowl big enough for the snake to get in and soak. Humidity needs to be 60-70 %.