how big is the enclosure? where is the bulb on top of the cage or in it if its in it cut a hole put hardware cloth on top of the hole and sit the fixture on it that should solve the problem if its on top i have no clue how the temps could be that high what kind of thermometer are you using? what is the room temp?
"Far more crime and child abuse has been committed by zealots in the name of God, Jesus and Mohammed than has ever been committed in the name of Satan. Many people don't like that statement, but few can argue with it."