Open loop or closed loop also known as a sealed room.
Sealed grow room ventilation.
Seal the exhaust fans temporarily until the humidity is back on track.
An open loop system has open ventilation or a fan pushing air into the room and another fan exhausting air out of the room.
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Injecting co2 into the room is also possible with the proper grow room ventilation fan.
Ideally your grow room will be situated against at least one outside wall.
Ventilation is another necessity.
Once the co2.
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.
If your grow tent setup is sealed this means that the level of co2 in the room gradually decreases limiting your plants growth.
Cannabis needs fresh air to grow well.
This makes pumping out the used air much easier.
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.
To add humidity back into the room just follow a sealed grow room ventilation design to raise humidity levels.
An example of using ventilation to keep a grow room dry is when the conditions outside of the room are controlled by the use of a grow tent.
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.
There are two different ways to set up a grow room.
This is known as ventilation or air exchange.
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.
No matter where you plan to build your indoor growroom take the time to make sure it is properly sealed.
Ventilation brings in fresh air and fresh co2 from outside and removes the old air from your grow room boosting growth and yields.