Cut the center hole for the light to almost 6 inches and cut the light flange to allow aairflow past the bulb. Pulls hot air from around the bulb. I think its ingenious. Any opinions are greatly appreciated.
I literally just got it all set up and running. Adding duck tape now to the cheap hose and those devil slots. My 440 cm fan at half way has it feeling comfortable so far. Take a while for whole room to warm up. 600w hps
Same idea as a cooltube. Just pulls fresh cool air through the area affected most by the rays and bulb. I haven't grew anything with it yet but it is still a winner