Quote Originally Posted by McToker
I figure I may need another fan to cool this light considering the problems I had with bends in the duct tubing.

http://boards.cannabis.com/indoor-gr...-up-night.html

As you can see, getting rid of the duct tubing with it's bends took care of my cooling issues. Right now I'm running a 500 CFM 8 inch in-line "booster" fan. I have another 4 inch booster fan out in the shop. I'm wondering if I were to set it up like this if I could spare myself the expense of another fan.

Carbon filter - 4 inch fan - flex duct - cooltube - flex duct - 8 inch fan
You can disregard this part. I just went back and re-read Rhizome's stickie on grow room set-up. I'll just bite the bullit and order a proper fan.