light

I am currently using the ZooMed 10.0 T8 18" tube light for my baby Russian tortoise's enclosure. It is about 15" away from him, which is as close as I can get due to the size of the tank. Is that an ok distance or too far? Would a reflector help if it's too far? Thanks!

Hi All, My first post here! I've been researching Tortoise for months as we are planning on getting a Hermann soon. I want to make sure we have everything we need in advance & know what we are doing. I'm still struggling with heating/lighting & even after thinking I had it all sussed, I'm now...