Active Air CO2 System with Timer, 0.2-2 cu ft per hour Hydroponics Quiet and Energy Efficient Design:

Quiet and Energy Efficient Design: Unlike common duct fans that uses an AC-motor which are loud and unmanageable

of Agriculture (WSDA registered)

such as using fume hoods or working in well-ventilated areas

14 umol/j per individual diode

Active Air CO2 System with Timer, 0.2-2 cu ft per hour Hydroponics Quiet and Energy Efficient Design:Description User friendly CO2 system: Boost growth with our system. It features a programmable timer that automatically maintains ideal CO2 levels for optimum growth. For areas small to medium in size, select the COSYS. For areas larger than 10' x 10', select the COSYS20. CO2 Flow Rate Calculator: To use Hydrofarm's flow rate calculator, click HERE. Update on COSYS & COSYS20: Please note that current models now come equipped with a black rubber O