Instead you have an intake hole that passively allows new air to enter thanks to the pressure differences between the inside of the room and the outside.
Closet grow room ventilation.
Step 1 select the space where you are going to put your plants it might be a spare bedroom a basement or a grow closet.
I cut holes in the door to match the vent facings.
But if you have a larger space hid lights are good as they are very growth efficient.
So you need to ensure regular air circulation around them for 24 7.
Placing fans in the grow area.
Spend some time creating a good grow room.
Most indoor cannabis growers use fans to blow air around within the grow area.
And it all starts from the seedling stage.
I put charcoal filters in the holes and built a shelf on the larger hole and put a fan on it to pull air out of the closet through the vent.
New seedlings are quite vulnerable to diseases sourced from damping off air.
Let s cover what you need to know about fans for in the grow room and as part of your exhaust system.
Some of the best tools to control air flow humidity and temperature in the grow room are fans along with a way to vent out used air.
If your grow room is in a closet or cabinet you want to choose a light that can be closer and that runs cooler like cfl or led without extra ventilation.
Fitting your grow room with a digital thermometer and hygrometer for humidity are great ways for you to keep a consistent growing environment.
Grow room ventilation if there is just one thing that i would pass on it is that proper ventilation is the most important thing for a closet grow.
I had a closet grow that i went a purchased a cheap interior door and two flat vent faces one bigger than the other.
With this grow room ventilation system you have a fan blowing air out but no fan blowing air in.