Hello there! We are about to upgrade our beardy to a 4x2x2 enclosure. I have read a lot about uvb and distances, trying to calculate the strength through the mesh screen, etc. My son did a custom background using spray foam, foam board, and dry lock. The main basking spot is 10 inches from the screen. I have a 10.0 T5 24" uvb lamp. Based on the zones it describes on the back, it is too close, but it also notes that the screen may cut it by as much as 50%. Am I overthinking this? Thanks!
@logar Do you have time to help with this post dear Logan? We need your expertise!!! 
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That is a very nice enclosure!
What strength UVB is it? That screen should allow around 75% if not more of the UVB through. It really shouldn’t be all an issue if you put it above those ledges but I would put it like this so It creates a gradient just like you want with heat. However everything still would depend on the strength UVB.
Please excuse my horrible drawing skills, but a Chromebook that is made for schoolwork isn’t the greatest thing in the world for it lol
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@logar I meant smiley faces not laughing faces on my reply above! My old eyes are starting to play mean tricks on me!!!
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I am attaching a picture of the graph on the back of the box (it came with the bulb on the right). No % is given. Based on that graph, it seems like the basking spot will be too close, but it depends on what the screen blocks. Thanks!
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Arcadia recommends at least 16" between bulb and basking area. when i was researching how to accurately measure UV with my meter i just got (Solarmeter 6.5R) I ran across something that had a chart that showed how much UV was lost when using a screen top vs having a hood or solid glass top…cant remember where it was of course. I remember quite a bit was lost out of the top if it was a screen, more than I had realized would. If i run across it again I will share it.
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Got him all setup this evening. Without dropping the money on a UV sensor, are there any signs I should be aware of that I need to get a lower strength bulb?
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There really isn’t much to tell if it is too much but as it is for a beardie I wouldn’t worry much
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