User-friendly CO system: Boost growth with our system. It features a programmable timer that automatically maintains ideal CO levels for optimum growth. For areas small to medium in size, select the COSYS. For areas larger than 10' x 10', select the COSYS20.
CO Flow Rate Calculator: To use Hydrofarm's flow rate calculator, clickHERE.
Update on COSYS & COSYS20: Please note that current models now come equipped with a black rubber O-ring, replacing the former white plastic washer.