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