Got me thinking as well, why the fuck don't they make fans that have a thermostat, effectively extraction fans with A/C capabilitys.

Anyway, when it comes to cool tubes, its something that needs to be thought about, because the sacrifice you make to remove all the heat off the bulb is losing lumens. In my opinion, an open bulb is much much more efficient than keeping the bulb behind layers of glass.

Someone mentioned that blowing on the bulb with a fan wouldn't be effective, with an extraction setup at the top of the room it would. Just blowing the hot air around the room, obviously not. Alot of people cool open bulbs with a simple fan ---> extraction setup.