Just as a heads up when using any bulb for heat your going to take a hit humidity wise... Make sure all bulbs are ouside of the tank too... Crazy curious snakes will go anywhere including hot bulbs.... I suggested to another poster that if you need to provide some extra heat from above... Go with a CHE... they provide no light at all and do a decent job not killing the humidity... Ive worked with both and I think your better off going with a CHE... either way ALL heat sources need to be on a thermostat.