Stealthy ideas to duct intake fr window

Maybe a silly question, but why do you need to pump outside air into the tent...?

Seems like then you'd be subject to all the random temperature and humidity swings mother nature will throw at you.

If you pull air from inside the house, it will be much easier to maintain a stable environment, which is really what you want in a tent grow...

I know some folks will exhaust outside for an indoor grow, but for a tent (depending on the size) I'm not sure that is even necessary or helpful

weedstoner420 said:

Maybe a silly question, but why do you need to pump outside air into the tent...?

Seems like then you'd be subject to all the random temperature and humidity swings mother nature will throw at you.

If you pull air from inside the house, it will be much easier to maintain a stable environment, which is really what you want in a tent grow...

I know some folks will exhaust outside for an indoor grow, but for a tent (depending on the size) I'm not sure that is even necessary or helpful

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Depends on temps I suppose if your home is already warm it might make the air your drawing in too warm and your rooms temps will climb if your running pretty cool though already you probably be fine drawing in air from inside like you said

Net curtain, then blind angled downward , then frame the window and box it over with a hole in the bottom of the box for duct.

conor c said:

Depends on temps I suppose if your home is already warm it might make the air your drawing in too warm and your rooms temps will climb if your running pretty cool though already you probably be fine drawing in air from inside like you said

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True, I was thinking more for the sake of stability/consistency than anything else. Depending on where you're at, outside temperatures can fluctuate by 20-30 degrees fahrenheit on a given day, not to mention the variations from month to month over the whole year. I wouldn't want to have to account for that in my grow tent...

Good call. You certainly don't wanna drill through electrical or plumbing work. While it shouldn't be too difficult to determine where the lines/pipes run, you never really know until you accidentally hit one. Might wanna check over the plans, and make sure before you go through with it. Maybe hire out to have it done. It really doesn't take that long to make the opening and have a wall vent installed.

Then put a backdraft damper in reverse on the inside of the wall, so no smells escape back through the intake port if wind blows or when exterior doors or other windows are opened up.

The interior box idea could work out too. Considering you vent through the top window opening, you could frame only that little section out, and make the intake vent go up and away where no one can see it from the outside as easy. Then hang the window blinds from underneath it instead. Leave some kind of hatch so you can reach in and open and close the window. Well, I dunno about that actually because the top window would be dark and the bottom would still light up, and look obvious. Scratch that idea. Best to cover the whole window so it always looks dark.

Drilling up higher on a ladder isn't the safest either. Best to have scaffolding to work on when trying to bore a bigger hole like that, in case it binds up.

weedstoner420 said:

Maybe a silly question, but why do you need to pump outside air into the tent...?

Seems like then you'd be subject to all the random temperature and humidity swings mother nature will throw at you.

If you pull air from inside the house, it will be much easier to maintain a stable environment, which is really what you want in a tent grow...

I know some folks will exhaust outside for an indoor grow, but for a tent (depending on the size) I'm not sure that is even necessary or helpful

Click to expand...

I was wondering when some one would ask that! It seems a lot of people just asume they need 'fresh' air from outside without realy thinking about what a plant needs, co2.

Think about it, plants take in co2 and expell oxygen, animals take in oxygen and expell co2.

I've been growing several years and never pulled in outside air. The co2 level outside is a little over 400ppm but it's 790 in my grow this morning. Because I'm a co2 generator.

Pulling in filtered air from outside can drastically reduce indoor air pollution.. Even better than air purifiers can do.

Then again, the way you do it could potentially cause mold issues from condensation building up, and end up decreasing the air quality even worse..

IMO, the best would be to drill 2 holes, and install an HRV or ERV (heat recovery ventilator) for the room.

1212ham said:

I was wondering when some one would ask that! It seems a lot of people just asume they need 'fresh' air from outside without realy thinking about what a plant needs, co2.

Think about it, plants take in co2 and expell oxygen, animals take in oxygen and expell co2.

I've been growing several years and never pulled in outside air. The co2 level outside is a little over 400ppm but it's 790 in my grow this morning. Because I'm a co2 generator.

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Good point!

My tent is in an open room in my basement, air comes in the bottom right side and goes out the top left side. I'm sure the majority of tent grows are similar.

I could see maybe if the room the tent is in is really small and the door is kept closed, there might be some concern with needing to "refresh" the CO2, like if the plants deplete it over time...but even in that case it would be better to intake from another room of the house than from outdoors

Hook Daddy said:

Yes, you can put a vent where ever you want, your drilling a hole so make it right the first time. It’s no different than a vent for a bathroom fan, cooking hood vent or clothes dryer exhaust. The window box idea over the window will also work, just keep in mind the window will need to stay open for any air flow.

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And the winner of how to descretly exhaust goes to hook daddy no doubt this is a genius idea even 007 would be impressed lol could it get any more stealthy than this? Well?..
Probably but even so it's a fantastic idea just need to figure out where the actual core hole will be etc I guess I need it to be in a straight alignment with the duct tube that comes out from tent duct or does that even matter? I've heard the more straight your exuast duct tube is & the less bends in the duct tube the better

I didnt read whole thread but if I saw more on how the window looks edge to edge you might get away with something I did. Idk if your venting in to cool grow or exaust out but exausting out beware before wasting time it may heat up the whole place 3F or little more which could be enough to upset people you live with.

So during summer I dont vent outside but I do any other time to reduce smell when I harvest or the house reaks. It has to during summer.

Ive made a vent so stealthy its a freaking VENT and the hvac team couldnt figure out what it was for. Until they put their hand over it but even then they werent sure. It was obvious we grow though and probably put that together but thats someone inside the place.

Just cut out a wood sheet to fit right in the window and seal it with ductape, improvise how to make it secure enough so you cant just slide it open and crawl in. Make it as hard as busting a window to get in if worried about that.

Cut out ducting with flanges that have a louver on it, connect ducts or booster fan to vent in.. Paint it matt black and the louvers and flip the louvers upside down so you have to be elevated to see iinto the ducts. Thats it.

Home ac cools it if lucky to have a vent in the grow room I only suffer when its too mild outside to use that air to cool down but my grow had acceptable temps still. From a far it looks like your window is open its just pure black.

Even up close you can barely make out what it is, just that its not a open window nor something that can easily come apart. Hope that helps.

Drop That Sound said:

Drilling up higher on a ladder isn't the safest either. Best to have scaffolding to work on when trying to bore a bigger hole like that, in case it binds up.

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I'm hiring someone professional out for the tumble dryer lol