get either a t5HO or T8 linear UVB and bulb (use a Zoo Med 10.0 if the cage is at least 2’ by 2’ by 4’ tall).
get a regular white light heat incandescent bulb from the hardware store instead (they last longer and are cheaper than reptile basking bulbs). There should be 12 hours of UVB and basking and 12 hours of complete darkness