Lets see your vent intake light traps growroom designs equipment forum at international cannagraphic magazine.
Grow room intake light trap.
This short video gives a quick demonstration of how to install greenhouse light traps.
Yes i know they add yet more costs to your set up but they help to keep your indoor garden clean an.
I used it on my passive intake for the hood vent.
Active intake systems actively draw air into your grow room with a fan.
All that this means is that you have one fan blowing air out and another blowing air in.
Adding ventilation to your grow room.
Great deal here doran dark room no light fan and 2 no light vents ebay item 290229610744 end time may 13 08 11 25 37 pdt a more ghetto solution is black pantyhose.
Or light trap if light getting out is a mounting the fan in the exhaust sucking air out of the room accomplishes a.
Do you believe in air intake filters.
Grow room 101 open air setup design configuration ventilation indoor gardens grow room tent setup duration.
These light traps will block additional light that might come in throu.
The size of the intake hole doesn t matter as much in this system so if your intake hole is the same size as your out take hole then you might want to consider using an active intake.