Using the carbon dioxide that actively fruiting mushrooms or mushroom bags exhale to passively enrich CO2 levels in a grow room.
Jeremy explains that exhale CO2 bags are basically mushroom bags that breathe CO2, and that the local mushroom farm ducts its mushroom CO2 into its aquaponics grow. He plans to do the same with a 4x4 gourmet mushroom tent feeding the 10x10.
Discussed in: Ep 002