I've always been using a single 160W powersun and a 110W basking bulb (usually just a back up).

I don't run both at once, because temperatures get very high, and the humidity drops dramatically. Both bulbs are fixed permanently, free of most vibration, in vertical ceramic fixtures. Usually they last about 8-14 months (in terms of the visible spectrum). I don't have a UV meter, but would like to get one, where did you purchase yours?
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