CO2 Replacement Regulator for Hydrofarm CO2 System
This product is a replacement part for the old style HF COSYS, not a complete unit. CO2 is an odorless, invisible, and non-flammable gas. It is also safe for humans in the maximum concentrations recommended for plant growth. The average level of CO2 in the atmosphere is about 300 PPM (parts per million). If the level decreases down below 200 PPM 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 agreed to be about 1500 PPM. With CO2 enrichment, under good conditions, plant growth rates and flowering will increase 20-100%. CO2 can be used from seedling right through harvest. If you're confused or have questions about CO2, check out our CO2 buyers guide. Want to know know long your tank will last in your growing space? Using a co2 calculator will help you use your CO2 efficiently.