— FREE shipping when ordering $75 or more of qualifying items.

Hydrofarm CO2 (.2 - 2 cfh) COSYS (8/cs) (eco-4543)

Hydrofarm CO2 (.2-2 cubic feet per hour) with Timer

Active AirTM CO₂ System

Active Air climate control products are available for a variety of indoor growing applications. Whether fans, CO2 systems, filters, or any other product in the line, they have all been custom engineered for hobby and commercial growers to provide both performance and value. With attractive color packaging that highlight each product's features, Active Air is the name you can trust for your climate control needs.

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.

Use Hydrofarm's Co2 Flow Rate Calculator.

*Not for use with Co2 controllers.

Active Air™ CO2 System - Delivers growth-boosting CO2 with its 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.

SKU: COSYS  
Weight: 4.3 lbs.
Package Dimensions: 8.8L x 9.8W x 6.9H
Suggested Retail: $139.95

Manufacturer's Product Information

MSRP $ 139.95

Your Price $109.99 / each Estimate Shipping · Price Match

21.4% Off Suggested Retail Price $139.95 You Save $29.96!

This item is sold individually. The case size is listed for your convenience for instances where you wish to order in case quantities.

— Ships from Seattle, Washington USA

— FREE shipping when ordering $75 or more of qualifying items.