Quote Originally Posted by Opie Yutts
Can you vent into the crawlspace or attic? You really need to get that hot air out of there, or consider flourescent lights.

Or try this: get a fan that is dedicated to blowing the space between your light and plants, and get a big ice block, set it in a big bowl and put it in front of the fan. Or just set a couple of ice blocks near your plants. They may last all day that way and decrease temps a few degrees. I've recently thought about trying something like this. I'll let you know how it works if I come up with something.
they sell a fan at wallyworld that does this.....it is a fan that has a pull-out bin; you put your ice in.....turn on and WAAALAAAA cooooold air...
but its about 40 or 50 bucks where i live.....but maybe cheaper in your store