Great Hydrofarm co2 valvle, please buy this online and buy a co2 tank to attach to this at your local welding shop for about 70usd and 10usd a refill. Then attach this nozzle to your tank and then it operates itself. Then you attach the clear tubes , which dispurse the co2 and then put the clear tubes in the middle of the plants from the ground, and then the plants will get co2 from the clear tubes, coming from the tank and valve.

CO2 valve info below. Thanks and enjoy

Hydrofarm Air climate control products are available for a variety of indoor grow applications. Whether co2 fans, CO2 systems, filters, or any other product in the line, they have all been custom engineered for hobby and commercial growers to give both performance and value.  Hydrofarms Active Air is the name you can trust for your climate control needs.

Deliver growth-boosting CO2 for yoru plants with our user friendly, easy to operate system. With its programmable timer, it will automatically maintain ideal CO2 levels for optimum growth.