So, a big thank you to Tracie for her post on the Powersun Mercury Vapor lights. Thanks to that article, I was able to figure out what was wrong with our new little beardy Nacho. He went from fine and eating, to not eating, not basking, not pooping in a matter of one day after being under that light. He was under it for one week. I was feeding him baby food and crested gecko diet by dropper to get food in him. It only took 10-15 minutes of having that light removed that he showed signs of improvement. He's now been under the 10.0 UVB tube and a 75 Watt basking light and he's eating, basking and pooping! YEAH. I purchased the Powersun thru Amazon, so it may have been an older one, I don't know - but I do know, I will never use one again!