Hydrofarm CO2 (.2-2 cu ft per hour) with Timer

Active Air

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(You save $27.78 )
4.30 LBS
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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. 

3 Years

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