$129.77
$116.79

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

NOTE: Current COSYS & COSYS20 now come equipped with a black rubber O-ring that has replaced the white plastic washer. 

Current Stock:
SKU:
COSYS
Availability
IN STOCK!
Weight:
4.30 LBS
Width:
9.80 (in)
Height:
6.90 (in)
Depth:
8.80 (in)
Warranty:
3 Years