NB Naturals CO2 dispersal canister refill pack is to be used with the canister after it has exhausted its use. TNB Naturals CO2 has the potential to double your crops yield. Adding CO2 allows plants to continue growing at an optimum rate at all times.
• Continue to use your canister and save money with the refill pack.
• Natural ingredients when activated create a blast of CO2 that can reach 1200ppm in a 12x12x12 area.
• Goes to work quickly. (8 to 10 hours)