I recently purchased Zoo Meds power sun bulb. It is 160 watts and I hung it over my tortoise enclosure which holds 4 tortoises, it is rougly 6 ft by 4ft. This bulb is excellent. I saw an immediate reaction out of all the tortoises they are more active and have an increased appetite. Originally I had full spectrum lighting and a large ceramic heat emmitter. The full spectrum lighting is still there but the heat emiitter is gone (the powersun is in that fixture). The powersun is an excellent bulb and Ill be putting one on my bearded dragon soon.
