Here are a few pics of the setup. Cell phone camera. Not the greatest quality. Whole setup and 4" inline duct exhaust. Not sure cfm, thinkin somewhere along the lines of ..... 35-50... maybe. but im gon go to radio shack and gon get a 85cfm 4.5" computer fan. and mount it right on top of the box. Turn the top fan on during light period and duct fan during dark period?


What do you think?:thumbsup: