I have raised reptiles for years, but never a cham. I have a 5 month old veiled that I've owned for 2 months. He is very healthy and have not encountered any problems yet. I'm using a 2 ft. reptisun 5.0 and and exoterra sunglow basking lamp. 50 watts. The tube light sits directly on top of the cage. Is this enough lighting? Any suggestions greatly appreciated. David