So I'm finally upgrading to 6'x4'x2' enclosures for my male and female water dragons. THe enclosures are PVC and only the top has screen for two 8.5 domes and a 24"x6" tube fixture, the rest is PVC as well. I am looking into buying a UV meter but don't know what one would best suit my needs. I need one that will give me the measurements of UV at different distances from the fixture itself as well as how much UV older bulbs are still putting out. The light fixture I have currently has two 12% Arcadia UV bulbs which might be a bit much (I think). ^^^ I heard that too much UV could be harmful or too direct making the water dragons not want to sit in the basking spots which wouldn't be good either. So I would like to check on the lighting before I put the water dragons in their enclosures. What meter would be best for me and where (in the US) would I be able to purchase them? Thank you!