CO2 Exhale Bag - XL

The XL ExHale Homegrown CO2 cultivator works 24 hours a day with no need to refill bottles or invest in a complex CO2 system. The vented cultivator unit contains a non-fruiting mycelial mass that produces CO2 continuously for up to six months. Because it uses no electricity and generates no heat, it doesn?t need to be turned on or off; it simply sits and does its job. The XL ExHale is designed for grow spaces up to 36 sq ft.