Active Air CO2 Drilled Tubing - 100'

The drilled tubing connects directly to the outlet of a standard CO2 regulator, which in turn attaches to your CO2 tank via a CGA 320 fitting. Once connected, CO2 flows from the tank through the regulator and into the tubing, exiting through the pre-drilled holes along its length. No additional hardware or adapters are typically required for standard regulator connections.

Since CO2 is heavier than air and sinks, positioning the tubing slightly above canopy level allows the gas to fall naturally down through the plant zone. Avoid running tubing directly in front of the exhaust of an Active Air 6 inch Inline Duct Fan, as moving air will disperse the CO2 before plants can absorb it. A loop or grid pattern across the canopy footprint provides the most even coverage for larger rooms.

Yes — the tubing can be trimmed to the length needed for your specific layout. Cap or crimp the cut end to prevent uncontrolled CO2 release from the open tip, ensuring all gas exits through the drilled holes as intended. This also helps maintain consistent pressure and flow distribution along the active portion of the run.

A CO2 controller is not required but is strongly recommended for precise supplementation. A controller with a CO2 sensor automates the process, much like how an Active Air Commercial Humidifier manages moisture levels, to maintain a target ppm level — maximizing both plant uptake and tank efficiency.

The tubing itself is compatible with any tank size — the right tank capacity depends on your room volume, target CO2 concentration, and how frequently you want to refill. For large rooms where 100 feet of tubing would be fully deployed, a 20 lb tank is a practical starting point, offering several days to a few weeks of run time depending on usage patterns. Smaller spaces with trimmed tubing runs can be supported by smaller tanks.

CO2 supplementation should run during lights-on periods only. Plants use CO2 for photosynthesis, which requires light — in the dark, plants respire and produce CO2 rather than consuming it, making supplementation during lights-off both wasteful and potentially counterproductive. Most CO2 controllers include a photocell or timer integration to automate this automatically.