Fan Intake Question

I have a Secret Jardin DR120 grow tent, and right now I am using a passive intake for air to go into the tent. I want to get a fan for an active intake for the tent, but am confused as to what type of fan I should get. I exhaust the tent with a 4 " Vortex inline fan (175 cfm), and the fan is hooked up so that it sucks air inside the tent through a Phresh Carbon filter, and then blows this air through my AC hood to cool it, and this includes about 5-6 feet of total ducting. So, I was wondering if I should get another 4" inline fan (~165 cfm) or a booster fan (~188 cfm) to push air into the tent. I will be using the fan to draw air in from outside the tent through a 4" Phresh intake filter, which is around 140 cfm. Any ideas?

Thanks,

Snap

I'd go for a like mate. The 4" inline like you have.

hotrodharley said:

I'd go for a like mate. The 4" inline like you have.

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Yea, that's what I was thinking. Thanks for your input!

I would stay with the passive intake as long as your temps are fine. There shouldnt be a need for a intake fan..unless you run a 6" exhaust, then a 4" intake.