I ended up selling the pendants and using the standard reflectors. I did add to the canopy when I put the 400 watters on the tank because the 250s were only about 4 inches off of the water. They didn't heat it up too bad and still arean't, I'm using one of the Wal-Mart clip on fans to get air flow through it and it's an open back canopy.

Maybe I'll see if anyone has a 10K 400 watter I could try out and see if I like the look or stick with the 20K halides.