Active Air-Timer nutrient-combo ” and trust that your

” and trust that your machine will run the way you want it to

• 100% virgin high quality material

Bug & pathogen free

They feature a convenient access porthole (porthole cover available separately) and multidrill access points to install various meters and pump cords

Low maintenance and oil free

Active Air-Timer nutrient-combo ” and trust that yourDeliver 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.