Active Air CO2 System with Timer, 0.2-2 cu ft per hour

CO2 System with Programmable Timer for Small to Medium Grow Areas

The Active Air CO2 System with Timer is a complete CO2 supplementation solution for small to medium growing spaces up to 10 x 10 feet. The system delivers CO2 at an adjustable rate of 0.2–2 cubic feet per hour and includes a programmable timer that can be set to maintain CO2 levels automatically during the light cycle without manual intervention.

The system is designed for ease of setup and operation. It connects to a standard CO2 tank (sold separately) and uses a flow-controlled emitter to release CO2 at the set rate. The included timer allows growers to restrict CO2 supplementation to specific time windows, such as the first few hours of the light cycle when plants are most actively photosynthesizing. The current COSYS now includes a black rubber O-ring at the regulator connection.

Key Features & Benefits

• Programmable Timer — Built-in timer allows automatic CO2 delivery on a set schedule without manual adjustment.
• 0.2–2 Cu Ft/Hr Output — Adjustable flow rate covers the CO2 needs of small to medium growing spaces.
• For Areas Up to 10 x 10 ft — Designed specifically for growing spaces up to 100 square feet.
• Easy Operation — User-friendly design for straightforward setup and daily operation.
• Includes O-Ring Seal — Current COSYS includes a black rubber O-ring at the regulator connection.
• COSYS20 Available for Larger Areas — For spaces larger than 10 x 10 ft, the COSYS20 provides greater output.

Who Should Use This System

The Active Air CO2 System with Timer is suited for growers supplementing CO2 in a small to medium enclosed growing space who want automated delivery without purchasing separate controller components. The programmable timer handles the scheduling, keeping CO2 supplementation matched to the light cycle without the grower needing to manually activate and deactivate the system.

CO2 Supplementation and the Light Cycle

Plants use CO2 only during photosynthesis, which requires light. CO2 supplementation is effective only during the light cycle and should be timed to coincide with peak photosynthetic activity. Delivering CO2 during the dark cycle wastes gas without providing benefit. The COSYS programmable timer allows growers to set CO2 delivery windows that align with the light schedule, maximizing efficiency and minimizing waste.

Frequently Asked Questions

What is the flow rate of the COSYS?

The Active Air CO2 System delivers 0.2–2 cubic feet of CO2 per hour, adjustable within that range.

What size grow area is it designed for?

The COSYS is designed for small to medium grow areas up to 10 x 10 feet. For larger spaces, the COSYS20 is recommended.

Does it include a timer?

Yes. The COSYS includes a programmable timer for automatic CO2 delivery scheduling.

Does it come with a CO2 tank?

No. The CO2 tank is sold separately. The COSYS connects to a standard CO2 tank.

What changed in the current version?

The current COSYS and COSYS20 now include a black rubber O-ring replacing the original white plastic washer at the regulator connection.