Did that to about 6 of 8 bulbs - they still work, but the inside has a semi-opaque coating.
And I brought up cali growers because for the $1,000+ worth of PVC heath spent on his space ship he could have bought three more thousand watt lights and just went bigger.
And, if you scale heaths system up to room-size (about 7,000 watts), you end up needing 550 clones - federal limit is 99.
So yeah, flame for no reason. Your not even running hydro, no wonder your not having problems cooling. Your system probably doesn't have any of the problems I listed, but it's small and soil. The second you make it out of PVC pipe you loose the ability to move the plants away from the light, that's what causes the bulk of the problems I mentioned. If you make it big, you end up with a hallway, and that makes it hard to get to the plants once there big - you have a foot of plants on each side and lights hanging down the middle.
Go ahead and reply "bullshit", since apparently your personal experience is the only thing that is correct.