Cool Tube Issue

Hi,
This is my Cooltube setup. The red thing is duct-tape.
From both sides I have installed 5in (125mm) inline fans. Right fan is vent (intake), left fan - exhaust.
My question is - would it be more effective if I switch the direction of both fans - now the intake is behind the lamp holder (E40). The light is 600W HPS.



Thanks.

PS: For some reason the PIC doesn't post. However I added link. Just click on the red X icon and picture will load.

I just run a 1000w and 600w daisy chained with the 1000w end open (passive) and the other end exhausting the room air and the light heat into a crawl space outside the room with a 440 centrifigual fan. The lamp holder is closest to the intake. All you need to worry about having a big enough fan so that when you put your hand under the lamp (on the glass) you can keep it there, if its hot you have to get a cent fan to get the air thru the ducting more efficiently.

Thanks. I could keep my hand beneath the glass. I think it would be OK, then.