Hey thanks ceestyle. I've got the filter hooked up right now that's it's adjustable but I think you're absolutely right about the position and the ducting shape.

Are you thinking that the filter should run parallel to the light (assuming the current setup is perpendicular)?

If parallel I think it might fit behind the light but it might block light and touch the wall (creating less flow). If I keep it perpendicular I would place it to the left of the light. Any suggestions on location? I guess I can try each way and see what kind of temps I get; except changing it all is a pain in the ass lol.

Lastly, how do people mount these fans? All I got were two screws that don't do a damn thing in the way of securing the fan to the provided bracket. If I could get that fan running in a vertical position (and lifted about a foot above the shelf) I could reduce the ducting drastically.

Thanks again.

~GG