I'll start off my saying I've used alot of different lamps in my cages. Many from Exo Terra and have had no problems with the 2.0 or 5.0 lamps with my animals. 3 days ago I installed a exo terra 10.0 compact in a med sized cage for one of my Bearded Dragons. Within 1.5 days she started showing signs of photo-kerato-conjunctivitis. When I saw this I removed the light and will be replacing it today. I warn everyone not to use the Exo terra 10.0 for their animals. I am not saying that all compact lamps are bad. I've used the 2.0 and 5.0 with out ill effects for over 2 years.