A 10 gal is way too small. I'd look into getting a plastic sweater or christmas tree box. They need exercise and don't usually do well in glass tanks.

You can go with a mega-ray bulb (MVB type bulb that combines UVB and heat in one bulb). But they can be a bit much for a tiny tort.

Read up here for some good care info (inlcuding some recommended UVB bulbs):

http://www.sulcata-station.org/pdf/S...esheet2003.pdf