Hello everyone what is the best UV light to use for my dragon, he is about 6 months old.Wright now I am using a Exo Terra Repti Glo 10.0, 15 w, 18" but my friend is not eating much, the lamp is about 6 months old. The basking temperature is about 105 , cool temperature around 75. The cage is about 4 ' by18" by 22".