Hello, firstly bp's are nocturnal and really don't require much light at all. Make sure that your uth is regulated by a thermostat (very important). The 100 watt bulb is a very hot bulb. What type of enclosure are you trying to heat and work with? Can you send over some pics of your set up? Bp's just need to know when it is daylight so make sure there is a way for them to discern that. Too much light is going to alter their natural behavior. Consider a daytime blue light and not a commercial household bulb. Also a nite time infrared bulb is better and wont stress the bp. How many heat pads are you using? There needs to be a warm side and a alternative cool side so the bp can thermoregulate and escape the heat when he's ready. There also should be a hot spot usually in between both sides made with a basking or hot spot bulb that is not inside the enclosure.![]()