Keep in mind that your fresh air intake needs to be at least twice the size of your exhaust opening.
If it is not a problem, I would put two intakes in.
Never underestimate the benefit that fresh air, and good circulation have on your grow and harvest.
I hope this helps.
Pullo
__________________ "The mind is not a vessel to be filled, but a fire to be kindled". Plutarch
Helps alot! I will putthat second intake in. Also- I sprung for a $27 6in duct fan as opposed to a 4.99 computer fan. saw a 4 deg F temp drop immediately!
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Regards,
MoS
Just a man, his dog and his grill...
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