When you say "it doesn't seem to hot" doesn't really help. I would recommend getting a thermometer to know for sure what it is. I'll go back and look but what do you have for light? You can spray them most anytime with CFL''s but with HID you should do it when lights are off or you might get burn spots on them. But you shouldn't need to spray them to have them look good. Need more info, what kind of dirt and other stuff are you using. You might want to give them a little water, maybe 1/2-1 cup. What are you using for water?