New grower. Do I need another fan? Carbon Filter. Set-up.

Im new to this stuff I just started a closet grow 4 ft x 4ft x 9ft
I have 1 inline fan 4" I was gonna have it setup to where I pull cold air in from the main room in to the closet and blow it out the crawl space in the closet. Unfortunately the air from the room wasn't cool enough so I switched it around. Now I have ducting from the crawl space to the light keeping the room at the right Temps. (Air is now exting into the room) My problem now is how can I set up my Carbon Filter? Do I need another fan? Or is the 1 fan enough? Ideas? Tips? Advice?

The less duct the better.

You could use that fan for the carbon filter and let the intake be passive with a flapper or something. Should work. Test it by smoking fat j's in there and having a friend hang out where you dumping the air or something.

twostrokenut said:

You could use that fan for the carbon filter and let the intake be passive with a flapper or something. Should work. Test it by smoking fat j's in there and having a friend hang out where you dumping the air or something.

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I'll give it a try! Thanks.

Your going to need another fan for exhaust and to connect your filter.

Maybe, if the temps are still too high. What are the temps @SOMAR_ ?

twostrokenut said:

Maybe, if the temps are still too high. What are the temps @SOMAR_ ?

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They are staying between 69 and 75.

Are you exhausting the air in the room? If so, the carbon filter should be at the end of the exhaust fan.

[scrubber] >>>> [fan]>>>> [exit]