Hi fellas, just wanted to add quickly re: Uvb blockage. The reflector's madeof tempered glass - which I was told is designed with the intent of blocking UV rays - how well & how much remains to be seen, but I felt it blocked enough to necessitate the addition of my Uvb supplementary bulbs. Btw, 5 hours a day no less than 20" away... I wonder how far their effective range is. Hard to find anything on it with google. If I find anything I will post. And thank you all for "friending" me - can't wait to start coordinating experiments.