U can use the powersun it emits UVb and heat but it can be deadly!!! It has to b 15incjes away and it’s too overwhelming I use it when I place my Beardie outside of his cage on a cat bed to look out the window and I pms e it high. The best is Reptisun T5 10.0 And ZooMed basking bulb. No colored lights ever and pure dark at nite with no Lites.I made a new cage, 48inLong x 24inWide x 18inTall, so about 90 gallons. I want to use a MVB because mounting my fluorescent light will be a pain for uvb. I also want something more all in one and simpler. Does anyone have any recommendations for a Mercury Vapor Bulb? Like wattage or what brand? And how far to put it from my Girlie Korn?