Cannabis needs fresh air to grow well.
Sealed grow room ventilation.
This is known as ventilation or air exchange.
Your grow room needs to be sealed off as much as possible in order for you to control the air and light that reaches your plants.
Seal the exhaust fans temporarily until the humidity is back on track.
Open loop or closed loop also known as a sealed room.
Ideally your grow room will be situated against at least one outside wall.
Regulating co2 in the grow room.
Co2 is heavier than air so oscillating fans will assist in distributing the co2 evenly throughout the grow area.
There are two different ways to set up a grow room.
No matter where you plan to build your indoor growroom take the time to make sure it is properly sealed.
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That way you can completely control your plants environment and work towards truly maximized yields.
An open loop system has open ventilation or a fan pushing air into the room and another fan exhausting air out of the room.
This makes pumping out the used air much easier.
Ventilation is another necessity.
Injecting co2 into the room is also possible with the proper grow room ventilation fan.
While adding small amounts of co2 does not require a sealed grow area higher concentrations in the 1200 1500 ppm range would be easier to achieve with a sealed or closed loop room.
Finally don t forget about grow room ventilation strategies.
Growers using this method should filter the incoming air with pleated air filters to help prevent the introduction of pests and other air borne contaminants.
Once the co2.
If your grow tent setup is sealed this means that the level of co2 in the room gradually decreases limiting your plants growth.
Although this is a sealed room its essential to vent the room at least once per day in order to refresh the air get rid of ethylene alcohol build up in the plants and in my case control.