I found some nice little 4" fans at Wal-Mart. They are nice looking little fans for 6 bucks. I got 2 and took some hanging hook screws and hung them on both sides of my canopy. Took a 3 way plug adaptor and pluged them into the same timer for my daylight lights. total cost of this little DIY was about 18 bucks after tax. just thought i would let you know if you where looking at getting some fans.

Sorry no pics though I think I might have broken my camera.