Cannabis plants need fresh air.
Venting grow room into attic.
You can readily find oscillating fans at a cost friendly price.
That means cool fresh air in and stale hot air out.
Keep the exhaust intake holes at opposite positions.
Your grow room needs air circulation.
No matter how hard you try some warm air coming out of the exhaust system will be still there in the room.
Ventilating the grow room.
Either an intake fan that pulls air from an outside source or a passive exhaust system pulls in fresh air by forcing old air out through an exhaust duct.
Tip 3 of 7.
Therefore every grow op requires air exchange.
With this grow room ventilation system you have a fan blowing air out but no fan blowing air in.
Dont get me wrong my grow room smells sweet but like i said i vent into my attic and there is no smell inside my living areas or around the outside of my house.
The reason for ventilating a grow room is simple.
If you don t want your plants to breathe it over again there is a hack.
I do plan on attaching a cf when i redesign due to my next strains that im growing as i have an ice strain.
Passive intake relies on passive airflow and negative pressure.
Too many growers get ventilation wrong and encounter all kinds of problems later in the grow.
When you set up a grow room ventilation system there are two types of fans that you should have.
Open loop grow rooms consistently provide fresh air to the plants in one of two ways.
An air extractor fan.
This will avoid the build up of humidity and heat when you vent grow tent into attic.
Their main job is to help in keeping the grow room cold by blowing air all around the grow room.