Fans help with the air circulation in the grow room.  Place fans in strategic spots to prevent the air from becoming stale and keep CO2 from becoming poor.

Learn all about climate for growing marijuana:

More climate related terms:

Climate | Air circulation | Airtight | Charcoal filter | Extractor | Fancontroler |Hygrometer | Humidistat | Humidifier | Dehumifier | Heating

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