Positive Pressure in Tent

Havn't started to flower, but added the carbon filter to my exhaust and now i have positive pressure. The 6" duct booster fan i have running is stronger than the 4" vortex exauhsting. Will this cause major smell problems? The duct booster fan REALLY helped my temps (summer heat is my enemy) dropping them from like 86 to 80. My question is how bad will my house stink if i have positive pressure in my tent, am i oing to need a speed controller to eliminate the pressure?

can you just run Filter > Light > fan out and let passive airflow in the room? as long as you have some exaust without a fan pushing air in you will have negative pressure..

great advice,i wish i could but its a 2x2x5.5ft tent, no room for the filter. the filter is actually in the attic through a hole i cut in the drywall into the attic of my apartment

i dont care if it reeks im just worried about my neighbors complaining. I bought a good carbon filter, but with positive pressure i bet my 2x2 will stink too high hell without good flow through the scrubber, ami just paranoid? (i grow the dank)

Positive pressure is no bueno in a tent. Most of the smell will still be going through your carbon filter, but in my experience, it will smell in the room the tent is in, but it won't stink outside the room the tent is in, and if it does(sometimes late in flower even with negative pressure is still does) ONA gel in the next room always works great.

It's very strain dependent too. You have to open your tent, and everything will get out when you do that- I always open up the ona when I have my tent open, otherwise my entire house will smell, when my tent is closed you can't smell it anywhere other than my grow room. I also use sprays, timed misters(which you can get at cvx, rite babe, ect.), glad plug ins, etc. around the house to keep it smelling fresh in general in case of any unwated or unexpected guests. Just some things to think about if neighbors are in close proximity-expect the unexpected.

my grow is 100% legal,(CA LAW) unless the feds want to raid my 6 medical plants in a total like 35 sq/ft area veg/flower. i just dont want to piss off my neighbors.

Most of the smell will still be going through your carbon filter

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thats actually the answer wanted. so even if i have some positive pressure the filter is still generally working?

and im growing shark shock, a skunk 1 cross that stinks like skunk already and are like 35 days from seed

@purplehays1 Your last posts above are legitimate concerns regarding neighbors. Please keep us posted on how it goes. Q's for the forum...How do we solve knocking down smell in small places? Any outside the box ideas? Carbon filters rock but the tent is open sometimes. #DurbanPoison_FTW

there are varying degrees of positive pressure, if your tent is visibly bulging from the excess air in it then yes smell will be escaping come late bloom. if this is the case i would prefer to have lower temperatures and remove the filter as it won't be doing much good.

fyi i have not run an intake for years, extra noise cost and equipment should i get busted, but then i am quite lucky that where i live we have a cool climate

RetiredMatthebrute said:

can you just run Filter > Light > fan out and let passive airflow in the room? as long as you have some exaust without a fan pushing air in you will have negative pressure..

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Is positive or negative pressure better? Strictly for the plants not accounting for neighbors or smell concerns.
More pressure means more air in the space, right? With negative pressure doesn't it get hard for them to breath? Does neg. pressure have some other benefit?
Does increasing pressure in the room increase maximum possible CO2 concentrations? or would only increase the amount of it lost through escape? CO2 is heavier than air, maybe it stays in the tent better....

As far as the OP, I would do whatever would put your mind at ease.
You could run the air in the tent across the light and then filter it on the way out. Your tent would have ambient pressure that way. There are little breather bags for CO2 that are small and inexpensive. Circulate the air with a little fan and you should be good. Enriched air for the ladies, clean air for the neighbors.

when you have negative pressure air is coming into the tent, when you have posotive pressure air is going out if the tent...a9passivly not talking about intake and exhaust)

with pos pressure you will always have air being pushed out the tent in any place at is not air tight, allowing the smell to go out with it..how much or how little it smells will depend alot on the strain and how used to the smell you get...just remember you may not be able to smell anything but the smell mjght be alot stroger than you realize.

as far as for the plants i have no clue, i wouldnt imagine it matters too much its not like they are in a sealed vaccume chamber. i mean the actual pressure in the tent wether neg or pos is verry minimal and prob wouldnt change the growth much

filter >fan> ducting into hood> ducting out through tent and through the wall into another room will put negative pressure on the tent and the whole grow room to keep down smell of anything outside the tent

@bcolt09 I think you are right. Thanks man

it works better the stronger fan you have too, i have a 10 inch fan for 2 1ks in a big basement bedroom and i can hang the plants and trim in there without stink in up the house

I like a little positive pressure in tents. It sure helps to keep bugs out.

im just worried about smell. So i bought a fan controller and adjusted the intake speed to create as close to no pressure inside the tent as possible.

SunTracedPath said:

Is positive or negative pressure better? Strictly for the plants not accounting for neighbors or smell concerns.
More pressure means more air in the space, right? With negative pressure doesn't it get hard for them to breath? Does neg. pressure have some other benefit?

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I would also like to know this

purplehays1 said:

im just worried about smell. So i bought a fan controller and adjusted the intake speed to create as close to no pressure inside the tent as possible.

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Please be sure to share tips to knock down smell in a tent. I'm using a adjustable speed fan controller on the 4" inline fan and a adjustable speed fan controller on the 6" exhaust fan which is connected to a 20" in length filter. I surran wrapped half of the filter. I read that after the filter stars not working to well in a yr or 2, you can unwrap the surran wrap and wrap the previously exposed half of the filter. Essentially doubling the life of your filter because the carbon was only activated by which the air actually went through the filter.

Pizzapunkk said:

I would also like to know this

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basically negative pressure assures no smell escapes and gets maximum airflow through the tent and out through your carbon filter. Positive pressure will allow the tent to expand and have a greater area, and may allow for better reception of co2 as the air is not being sucked in and out of the tent as quickly (have heard this said im no scientist). But positive pressure pushes air out of any tiny opening and NOT through your carbon filter.