Where do I get my air intake from?

Hi Guys

I've grown outdoor a fair bit but im setting up my first indoor hydro room this week. I've just bought everything I need.

Im doing it inside a grow tent (7 foot x 7 foot x 7 foot).

I was wondering if anyone could give me some help on where I should get my air intake from. The grow tent will be in a bedroom, and because I have ducted heating in the house I don't think it would be a good idea to get the air intake from within the bedroom. So I was thinking of running the air intake ducting up into the roof, and putting the end of the ducting as close to the edge of the roof as I can get it, so that It can suck air from outside.

My question is mainly how do other people do it and will that work OK? I don't want the ducting to be seen from outside, but im not sure if it will suck in enough cool air from outside if I just leave it sitting in the roof right next to the gutter. Theres about a 1 inch air gap underneath the last row of tiles, will that be enough?

Any tips appreciated.

I don't know much about large-scale operations like what you plan, but I think you should worry more about where all the heat is going to go, not the intake.

does that room have a window? if you tamper with the roof/structure you run the risk of leaks no? I wouldn't mess with the roof...if anything run ventilation thru the house to a room with a window..

fureelz said:

does that room have a window? if you tamper with the roof/structure you run the risk of leaks no? I wouldn't mess with the roof...if anything run ventilation thru the house to a room with a window..

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Ah, but still I ask where the exhaust will go.

Solstice07 said:

Ah, but still I ask where the exhaust will go.

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G'day

The exhaust is sorted, I bought a big carbon filter from the hydro shop, I have a fan sucking air through the filter and from there it goes into a duct out through the tent roof, up into the roof cavity, and then just expels into the roof cavity. I think that should be OK?

Its the intake that I was questioning mainly. Solstice07, in regards to the intake duct, I wasn't going to do any tampering with the external roof, all I was going to do was cut a whole in the plaster/gyprock of the inside roof, run the intake duct up through there and lay the end of it inside the roof still, but right next to the gap between the first row of tiles and the gutter, you know that air gap you can see from inside the roof? Im just not sure if it would suck enough air through there and into the intake duct.


I thought about running the intake to a window but that would be visible from outside, I need it it to be super stealth.

No, I don't think you should exhaust the tent into your attic (roof cavity). I wasn't the one that said anything about messing with your roof, but he had good advice. Pumping warm, humid air into that space is not a good idea.

I firmly believe that you have this thing backwards. If I have this right, you plan to try to intake air through a duct from near an attic vent at the same time you're venting the exhaust there? Taking air from inside the house and venting it out that attic air gap you mentioned would be better, IMHO.

^ i think so too...if it snows where you live you run a pretty good risk of giving yourself away.

fureelz said:

...if anything run ventilation thru the house to a room with a window..

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Yep this is what Im doing keepin the intake at feet level for cooler air.

Or build a box around your window (insulation for sound and in disguise) and cut a hole for an intake or outtake.