Sierra Natural Science SNS CO2 Kit™
The SNS CO2 Kit provides the benefits of CO2 supplementation without the bother of bottle refills or complicated CO2 systems. The microflora in this easy to use pouch steadily supply CO2 for up to six months after activation. Perfect for smaller growing areas, the SNS CO2 Kit boosts CO2 levels to 600-700 parts per million (ppm) in a 20 square foot space. Depleted contents are compostable.