Nice! i've been thinking about getting a couple cooltubes to cool my shit down.

2 things i thought i'd mention, just food for thought type of stuff...

1.) Some lights are meant to hang horizontally...i'm not sure why or if hanging it vertically shortens the bulb life...but you might want to see if your bulb specifies.

2.) looks like you have aluminum foil on the walls. If that is so, that may have been part of your heat issue, i've read that stuff reflects/holds more heat than light. i'd suggest getting some cheap flat white paint, a roll of mylar, or at the very least a couple of those $2 emergency blankets.

Just a couple thoughts.
looking good.
Skeet.