If that bulb is really close to the glass, i would be concerned about it being a "cooltube" perse. What really makes a cooltube great is being able to not only pull the air from the bulb, but also pull from the room. I'm not sure how that bulb will be if you have it in such a tight confinment, the life of the bulb might be compromised, but i'm not 100% on that. It looks great, the only thing i think i would change would be to get a bigger glass, and connect some tubing to the end to your fan, you have a 500+cfm fan so you should have no problem pulling air out.

Another than that, great job.
whatsthatsmell Reviewed by whatsthatsmell on . DIY COOLTUBE W/ BATWING REFLECTOR i just got my pyrex bake a tube in from ebay earlier for 30 bucks and incorperated it into my ss batwing reflector i welded(weld good for 5000 psi 65% nickle) the tube holder to the the light on one side cut the holder alittle short so i can put the 4"-6" connector on there to hook up my exhaust hose, which ill get the connector tonight, i used a wire(ghetto rigged) to hold up the other side one thing i like better about this idea is you have use of a full reflector rather than havin a Rating: 5