oh i strongly agree with Sandi, the reptiGLO 10.0 has had some real ill effects, the reptiSUN 10.0 is the best bulb you can get, please reconsider and get the reptisun.
also you said hes 4 months old and hes eating large locusts?!?
now this is quite concerning to me as no livefood (for the exception of some worms) cannot be no longer than the space between their eyes, anything bigger than that and the dragon is at a high risk of impaction, please use small or maybe even medium hoppers/ locusts for him. how long is he exactly from nose to tip of tail? even if hes big for his age i still think large locusts would be way too big.