Quote Originally Posted by Twentyinches
aww I read it! I'm trying to understand your set-up however.

Fans are much more efficient at pulling air than at pushing air... the exhaust fan is usually placed right at the point of exhaust. From there, it will pull air through your light reflector, out of the garden... btw why did your mount it vertically?
I had to hang it vertically, because my grow box is 2' x 2' X 4'....It's 19" plus reducers and hose...anyway it wouldn't fit. I have passive intake at the bottom, then my tube (but the lamp is at the top of the tube) then my fan going out of the box. I just don't want to fry the wiring where the lamp is in the tube. >--intake--tube---light at the end--exhaust fan and right out of the top of the box. What do you think? Thanks a bunch, Ldy