Help, What Fan Is Needed?

Hi

I am getting a grow room ready, Just wanted to know what fan will be needed. In the pic the black box is the sealed grow room, each orange box is a 6" cooltube 600w HPS, and the silver is the ducting, air from outside passes through the bulbs and exits the out the top, this is completely sealed and is not used to exchange the air in the growroom, I have a big fan plus CF for that.

So I wanted to know if I should have the fan at the intake pushing air through or have the Fan at the outake pulling air through the light, Also what size and power fan would be needed to keep all 3 cooltubes cool to the touch?

Thank you very much in advance

Best to have the fan pulling on the cooltubes ... it's usually better to pull cooler air through any leaks than push hot air out. A good fan (I have one) is CanFan's MaxFan, rated at over 30 cfm. Other good fans out there but that one I know. cn

cannabineer said:

Best to have the fan pulling on the cooltubes ... it's usually better to pull cooler air through any leaks than push hot air out. A good fan (I have one) is CanFan's MaxFan, rated at over 30 cfm. Other good fans out there but that one I know. cn

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lol 30 cfm that fan must be a beast! take thats a spelling mistake.

thirty ... THUNDERING ... cee eff emmmmm!!!

lol
yeah, I meant 330 cfm
still chuckling. cn