tora said:UVB rays can't even go through glass or water, and have a hard time going through mesh, so I don't think they'd get any in the shade..
You right !! I get zero through my greenhouse and windows and almost nothing in the shade .
At sunset or sunrise in my yard with a clear blue sky i only get around 15 MW of UVB and during the day in the shade its 0-15 at most , depending on how much cover . I just ( 7:04 pm ) aimed my meter directly into the sun at sunset ( still very clear ) and got only 15 . its around that at sunrise. also right now in the shade it was 0 MW. I don't know how much they need BUT it sure would be a good idea to have a good supply of UVB if you can . If you using a MVB and its out put is only 25 and its 110 -120 deg under it , I thinks he's going to move away from the bulb way before he ever gets enough UVB . wouldn't he ?? :huh: Look at the readings i am getting in my yard and i bet the Dominican republic may be even higher .???? i just can't imagine anything under 100 MW being good for a indoor reptile . BUT i may be missing something .:s