Active Air CO2 Replacement Regulator for Hydrofarm CO2 System cloning-and-seed-starting • Unit automatically flushes and

• Unit automatically flushes and fills periodically to maintain the proper conductivity

Mix: 1/2 oz/gal of water for flowering plants and 1 oz/gal for veg

choking out all biological activity

Digital display features a clock

Active Air CO2 Replacement Regulator for Hydrofarm CO2 System cloning-and-seed-starting • Unit automatically flushes andThis product is a replacement part for the old style HF COSYS, and is not a complete unit system. CO2 is an odorless, invisible, and non flammable gas. The average level of CO2 in the atmosphere is about 300 ppmv (parts per million). If the level decreases down below 200 ppmv in an enclosed growing area, plant growth slows to a halt. Through the years of testing and research, the optimum enrichment level of CO2 for plant growth has been established at