Active Air-Timer Options:Hydrofarm CO2 (.2-2 cu ft per hour) with Timer Lost Coat Plant Therapy has

Lost Coat Plant Therapy has been laboratory tested by CW Analytical (among others) and found to leave no residue

Comes with plastic stopper to secure the string at the desired length

• Made with Low Biuret Urea

16” or 24” widths

Active Air-Timer Options:Hydrofarm CO2 (.2-2 cu ft per hour) with Timer Lost Coat Plant Therapy hasDeliver 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.