The Exhale Homegrown CO2 - Premixed Ready to Use Bag for Grow Rooms and Tents with Hanger | Twin Canaries Chart IncludedBrand: CO2 The Original CO2 Bag Features: Effortless CO2 Enrichment: ExHale CO2 Homegrown is a passive CO2 generator that requires no maintenance, electricity, or complex setups. Simply place it in your grow space, and it will do the rest. 100% Natural: Our product relies on the power of mycelium, a beneficial fungus that naturally produces CO2 as part of its life cycle. This natural process ensures a consistent and safe CO2 release for your plants.