My tortoise is also less active and does not eat as much. The more I have read the more it seems as though it may be a lighting issue. I am using two bulbs. One bulb is a basking bulb from Wal Mart Basking Bulb from Wal-Mart The other is a bulb for uva and uvb which is the Exo Terra repti Glo 5.0 Compact Tropical Lamp. I have had it for about 5 months now. UVB and UVA light Are these two correct in using? Should I replace the Exo Terra? Or should I just invest in a 100W powersun that does all 3? Thanks