Active Air CO2 System with Timer, 1-20 cubic ft per hour


Hydrofarm CO2 (1-20 cu ft per hour) with Timer

⚠ Limited Stock!

Frequently Bought Together


Deliver growth-boosting CO2 with our user-friendly, easy to operate system. With its programmable timer, it will automatically maintain ideal CO2 levels for optimum growth. For small to medium size areas, select the COSYS; for larger than 10′ x 10′ areas, select the COSYS20.

To use Hydrofarm’s CO2 Flow Rate Calculator, click HERE

Additional information

Weight4.4 lbs
Dimensions9.8 × 8.8 × 7 in


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Vendor Information

  • Store Name: HF
  • Vendor: HF
  • Address: CA 94954
  • No ratings found yet!