Air curculation

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Beginnergrower01

Active Member
I have a 2×4 tent with inline exhaust and fan blowing in fresh air coming from window ac.
My humidity levels are stable with baby humidifier in seedling stage

Do you think I need exhaust and fan on for curculation in 6 hour dark period for autos?
Besides in heavy flower, I know they need to run then
 
Dank Bongula

Dank Bongula

Well-Known Member
How many fans inside the tent are actually circulating air? An intake and an exhaust fan are not considered actual circulation within the tent. If you do not have any fans inside, I would recommend moving the fan that is blowing air in from the AC to inside. If you already have 2-3 fans inside circulating air in addition to the intake and exhaust fan, then no, you do not need to run that intake fan, but keep the exhaust fan on. Unless of course that intake fan is the actual fan inside the AC unit blowing air into the room. Sorry for being super specific as I am absolutely bombed right now.
 
B

Beginnergrower01

Active Member
Dank Bongula said:
How many fans inside the tent are actually circulating air? An intake and an exhaust fan are not considered actual circulation within the tent. If you do not have any fans inside, I would recommend moving the fan that is blowing air in from the AC to inside. If you already have 2-3 fans inside circulating air in addition to the intake and exhaust fan, then no, you do not need to run that intake fan, but keep the exhaust fan on. Unless of course that intake fan is the actual fan inside the AC unit blowing air into the room. Sorry for being super specific as I am absolutely bombed right now.
It's a 2×4 with bottom vents open
Ac blowing into room towards intake fan (large powerful) that is placed next to tent on bottom side ventilation hole which blows air into the tent and through a 4 inch inline exhaust fan. Do I need to run these fans 24/7 along with baby humidifier? My temps are staying at roughly 75-80 F, and humidity 55 percent with baby humidifier running. I'm in seedling stage of autoflower, week 1
Click to expand...
 
Dank Bongula

Dank Bongula

Well-Known Member
I already told you don't need to run both.
Do you have any fans inside actually circulating air? You ask me a repeat question but can't answer mine. Work with me here

Sounds like you don't have an exhaust fan either, is this correct?

Tell me how many individual fans you have Inside your tent. Let's start there.
 
B

Beginnergrower01

Active Member
Dank Bongula said:
I already told you don't need to run both.
Do you have any fans inside actually circulating air? You ask me a repeat question but can't answer mine. Work with me here

Sounds like you don't have an exhaust fan either, is this correct?

Tell me how many individual fans you have Inside your tent. Let's start there.
Click to expand...
IMG_20210717_215437.jpgIMG_20210717_215503.jpg
 
Dank Bongula

Dank Bongula

Well-Known Member
You need fans inside asap. Atleast 2, three is great...a tower fan circulating air back and forth under the canopy and two static fans in the upper portion moving air downward...not crucial at the moment as they are still seedlings, but you will need them.

As far as exhaust, you're gonna need a fan on that. At the minimum you want an exhaust fan pulling air out, this will create a negative pressure inside your tent and your open flaps on the bottom will be your passive intake. Works just fine this way.
 
Dank Bongula

Dank Bongula

Well-Known Member
Also, air takes the path of least resistance, so once you get your exhaust fan set up for air exchange (that is what it accomplishes, not circulation), shut all your bottom flaps except for the one opposite of your exhaust port. That open flap will be your passive intake and shutting all the others will assist in preventing light leaks.
 
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