Well, today at my house it got up to 109 degree today, even hotter inside the house. I find using the mercury vapor bulb in the summer to be a pain because of all the heat. It heats up my enclosure too much, so I went back to using the regular florescent tube. I don't have to worry about the cage getting too hot. However, the MVB does work pretty well during the winter time, though. Even though it gets really hot in the summer, the winter here can be pretty cold compared to other parts of California.


