Quick question, Vulkan (used to be kachu, either or really) will not bask for the life of him. He's active, pooping regularly, eating and all that, not a single stress mark, and has been nice and bright, except for his head which seems kind of gray on the top, like if he was shedding, but theres no loose skin. Main problem here, Is he will not go anywhere near his basking light. It's an exo terra 75 watt, and all the temperatures are correct.. I'm really worried that maybe my thermometer isn't working correctly or something.. Opinions?