Hydrofarm CO2 (.2-2 cu ft per hour) with Timer InLine CO² controller with display and

CO² controller with display and day/night detection easy to install and set up

Additive Nutrients

the fixture came out as the coolest

plant vigour

Hydrofarm CO2 (.2-2 cu ft per hour) with Timer InLine CO² controller with display andProduct Details 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