A charcoal filter is a metal cylinder filled with active charcoal. This will filter the air going out of your grow room from the strong marijuana smell. A charcoal filter can be connected to the air extractor.

Learn all about climate for growing marijuana:

More climate related terms:

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

World Icon

marijuana seeds worldwide

200 grow guides

500 Helpful Articles

Group Icon

group of growers

35,000+ Daily Visitors

500,000+ Grow Bible readers

Plant Icon

marijuana strains

1500 Strain Reviews

100 Strains For Sale