The problem is... doors really don't seal all that well, regardless of how well you try to seal them, so you are sucking a lot of your air from outside the cabinet. If you put the exhaust fan as high up as you can on the back wall, it will work better.

Lower your inside fan so that you are blowing up towards the lights. Right now you are blowing the light heat down on the plants. Up is mucho mejor.

Nice looking box. Very good work! :thumbsup:

PC :smokin:
PharmaCan Reviewed by PharmaCan on . I'm lost...Help...CFL Grow Ok hereā??s the thing I have a 2ft X 2ft X3ft box (1/4inch plywood with 1inch X 2inch framing) raised off the ground 2.5 inches. I have 8 cfls in it 4 are 5000k (hanging in the middle in an X pattern) and 4 are 6500(one hanging in each corner). I have an exhaust fan (6inch fan max cfm 240) it was sucking from the ground threw a 4inch dryer hose(kinda squashed to fit under the box) which I thought was decreasing the performance of the fan) so I moved it into the door of the box about 10 inches Rating: 5