Hi there, Marley is a good looking dragon and your set up looks good as well. One thing that needs changed is that the uvb should be mounted above him , not too the side. The uvb doesn't really go out sideways but should project downward to his basking area. Find some wire to loop through your screen so it's attached from above. Another thing, beardies still need calcium a few times a week with calci or Phoenix worms no matter what you've heard. Calcium with D3 at least 2-4 X a week for growing babies , 1-2 X a week for adults. Hopefully that will help him out. If it's sunny + where you live you can take him out to sit in the grass with you for a big boost of uvb + D3.