Any of those hoods should work for this application.So not the one I'm currently using: http://www.exo-terra.com/en/products/reptile_dome.php. The narrow one.
Something like this: https://www.cyberzoo.se/sv/articles/2.300.6791/zoo-med-deluxe-porcelain-brooder-lamp-25-cm-max-200w?
And the Arcadia is correct? I edited my post so don't know if you missed it. Google said the T5 gave more UV so I assume that one is better than the T8?
Yes on the T5 HO Arcadia bulbs. The 22 inch one is fine. It doesn't have to cover the entire enclosure. I prefer to run those for only one or two hours mid day to simulate the mid day UV spike that happens outside daily. They produce as much or more UV than the mid day summer sun, so it doesn't need to run all day. Using it this way also makes the expensive tubes last for years, so says my UV meter.