Leave the tube how it is and use it just to bring viewing light into the enclosure and pop out the middle halogen bulb and put an MVB bulb in it. It will help raise your basking temp, and it will encourage your monitor to bask with added UV! And you already have it on a chain so you can adjust the height as needed to maintain the correct basking temps! I've been thinking of a way to do this on my own build and that is actually what I plan to do. Dr. Bahoola said it well; it can't do any harm and it might do some good.
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