I currently have my adult BP in a 40 Gallon with an UTH and 100 watt dome light. I have been running the dome light for 12 hours and then using a night light in the evening. The heat seems good, but the lights are sucking up all the humidity. I spray multiple times each day, but the humidity sits around 45%. I wanted to see if anybody uses just an UTH for their BP and if that would sufficiently heat a 40 Gallon.