Im setting up an attic grow & Im concerned about the ventilation. Ill be using 6x400W cool-tubes (2 rows blowing out hot air) & 2 inline fans connected to separate carbon filters.
However I dont want to exhaust the hot air out of the roof for the chopper coppers to detect the heat signature (in U.K. they dont need a warrant for FLIR cams). Which is the ideal way to suck in cool air & blow out hot air?

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I'm a UK grower.
In my attic there is a hole in the wall. For exhaustion - I simply taped the duct to the hole, thereby venting into the wall cavity.

For ventilation - I simply leave the attic door open. Although, I don't really need to do this as my roof has a very small gap around the edge near the guttering.

Would it be possible for you to show me with a pic?

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Why dont you vent into the home make them look like ac vent's and you are all good with two filters.

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I WANNA GET HIGH SO HIGH THAT NOT EVEN A PAIR OF WINGS CAN GET ME TOO IT!!!!!

You're in luck. I actually have some on my pc.
Pic 1. Shows extractor fan.
Pic 2. Shows ducting taped to wall.

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	DSCF3028.jpg (65.9 KB, 30 views)

Thats seems simple but Ill have a total of 4 fans extracting hot air so I dont think that mthod will work for me thanks for your help.

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That sound like it could work especially the ac style vents but the attic must have cool air coming in from outdoors but in no allowed to cut holes in the roof as their are people living up us. How could I tackle that issue?

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you can still bring in fresh air from your home to the attic just as long and intake and exhaust are on opposite sides. So for example you can have you intake on the bottom and the exhausted air will be sucked from the top of the room because of lights but the ducting will end up at the bottom goin into your home.

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I WANNA GET HIGH SO HIGH THAT NOT EVEN A PAIR OF WINGS CAN GET ME TOO IT!!!!!

An Attic should already have decent ventilation. Do you see light coming in up there?

And Exhaust into your chimney, heat is supposed to come out there

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"If a law is unjust, a man is not only right to disobey it, he is obligated to do so." - Thomas Jefferson my grow

Theres no light coming up in the attic & in this apartment there are no chimneys as the law in UK no longer allows gas heaters in these type of apartments, my first choice was to exhaust out the chimney though.

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