Ventilation should I push or pull air

Looking to keep my grow as cool as possible and I have been pulling hot air out but it’s getting too hot would I have better luck pushing air into the tent I have a 450 cfm fan I’m replacing my 250 with

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You should have 3 fans working in unison. Intake for fresh air, oscillating to move the fresh air around and an exhaust to expel the hot air :love_you_gesture:

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I found an intake and exhaust dont work as well together as having the vents open at the bottom of tent with 1 fan pulling through the filter. It worked great no filter but the filter changes the cfm rating on exhaust but not intake. They started working against eachother, the intake pushed harder then the exhaust could pull is what I mean. I imagine a 6 in exhaust with a 4 in intake might fix that issue. Thats how it went for me anyhow

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I don’t have an active intake. Inline exhaust fan pulls whatever conditions are in the room your tent is in through the tent and out to where you exhaust. Are you venting outside? Or is it circulating in the same room?

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Venting
It outside suckingmfrom the top and then put my
Carbon filter

Perfect. If you cool the room you’re in (lung room) it’ll cool the tent when it expels the hot air outside and pulls the cooler room air through.

Always better off just sizing the passive intake appropriately with some but minimal negative pressure, & making sure the lung room is cool enough, & making sure you have enough exhaust fan. A lot of fans choke once they cross a certain level of negative pressure, especially these new axial-centrifugal hybrid deals. Simply opening up the passive intake could solve that problem.

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This is what I just came back to curious if it’s from heat or nutrient lick out happened in 2 days



Any help appreciated I have no idea what I did wrong

Most will pull air from the top to mitigate heat and maintain a negative pressure in the tent to control odor.

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That’s what I’m doing just making sure there’s no better way I’m gonna get another filter and have it pushing air into the tent at the bottom with the fam I just took out of service to add the big guy

Carbon Filter on intake may not be necessary and only restrictive.

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When you say heat, what kind of temps are you talking about? The plant will tolerate 80 to low 80’s. With those temps water intake will increase. I see a plant wilting from lack of water.

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110 this girl my girl os doing just fine leaves aren’t even tacoing believe me or not I’ll send pics tomorrow but it’s hotttt

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She’s in vegg where the temps got up to 105 not to the flower where it’s the same but I have more air flowing it’s pushing around the bottom and pulling from the top and I have a box Fam hannginf to make it bearable been working so far well c I’d it continues to work

Yeah, obviously 100+ is way to hot. You need to find a way to lower the temperature in the doesn’t you have your grow tent in.

The poor girl

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110゚thats too hot, if there’s any way possible to control the temperature in the room you’re pulling the fresh air from should be able to get the problem under control.:v::+1:

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What do you attribute its recovery to?

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Oh I know she’s doing the exact thing my other big girl did and died 2 days later I don’t know if it’s nute lockout and heat or if it’s disease and rust fungus there’s no spots and it doesn’t rub off but it’s spreading like wild fire


Trying to bribe the owner into loaning me an ac to I’m trying

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I think you’re dealing with burn. The AC might be the only fix. High heat = high transpiration = excessive nutrient uptake… burn.

I could be wrong, but it fits the scenario

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