Question on grown room.

[Applepie/vanilla icecream]

Building room and what do you guys do (when flowering comes along during the 12 hours of darkness) to have a fresh air in vent but gotta keep light out.....? How will I do this when the time comes.

 

[CC Dobbs]

Backdraft preventer

 

[puppetstring]

use 2 90 degree elbows spray painted black inside. it's called a "light trap"

 

[Applepie/vanilla icecream]

use 2 90 degree elbows spray painted black inside. it's called a "light trap"

Wow, thanks man. I have been searching the net/YouTube, etc. but never found any one mentioning this.

 

[Dogenzengi]

Home Depot and lowes sell hard flexible metal heating and ventilation ducting.
They sell a duct that's like a "bendy straw".
it is sold like a closed accordion, you can pull it open straight or in a bend.
It will hold its shape and can be expanded in length out to 3'.

 

[Applepie/vanilla icecream]

Home Depot and lowes sell hard flexible metal heating and ventilation ducting.
They sell a duct that's like a "bendy straw".
it is sold like a closed accordion, you can pull it open straight or in a bend.
It will hold its shape and can be expanded in length out to 3'.

Thank you boss man

 

[ink the world]

I'd suggest putting a Hepa filter on your intake as well. Keep out bugs, PM spores etc.