So I had a coil which I heard blind tortoises so I'm getting a Reptisun 10.0 tube bulb and just wanted to know, do they produce a good amount of UVB for a Russian tortoise, and do they hurt or blind their eyes or hurt them in any way? Thanks!
The long tube type doesn't hurt them, but they are not all that effective in my experience. If your tortoise gets regular sun for at least part of the year and is already an adult, you should be fine with that. If its a young one, or if its indoors most of the year, I'd invest in a Mercury Vapor Bulb instead. Just my opinion.