If you need indoor uv, the newer HO type bulbs are the way to go. I like the Arcadia ones from Lightyourreptiles.com. ZooMed also makes a good one. You will need a UV meter to check the levels and make sure your bulb is mounted at the correct height. The solar meter 6.5 is the standard. I don't know of any other method or meter that measures the correct UV wavelengths for our tortoises.Any bulbs that you recommend? And it is probably a foot or two above the tortoise.