4mm Air Line – Airline Tubing for DWC & RDWC
4mm Air Line – Airline Tubing for DWC & RDWC
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Description
Flexible airline that keeps oxygen flowing to your roots
This 4mm air line carries the steady stream of air from your pump to airstones and diffusers - the aeration that DWC, RDWC and other reservoir systems depend on to stop roots sitting in stagnant, oxygen-starved water. Poorly oxygenated solution is where root browning, slow growth and root rot start, so a reliable feed line matters more than its price suggests. The flexible, kink-resistant tubing routes cleanly around buckets and tanks and cuts to the exact length each site needs.
Key Benefits
- Standard 4mm bore fits common air pumps, airstones, non-return valves and manifolds
- Flexible and kink-resistant, so airflow stays constant around tight bends and bucket lids
- Cuts to length - run only as much line as each reservoir needs, with no wasted tubing
- Push-fit connection onto standard barbed outlets for a quick, secure seal
How to Use
- Cut the line to length with sharp scissors for a clean end that seats fully
- Push one end onto the pump outlet and the other onto the airstone or diffuser
- Fit a non-return valve in the run if the pump sits below water level, to stop back-siphoning
- Check the fit is snug enough to hold pressure without slipping during a run
Questions & answers
Will it fit my air pump and airstones?
It has a standard 4mm bore that fits common air pumps, airstones, non-return valves and manifolds, and push-fits onto standard barbed outlets.
How is it sold?
By the metre, so you can buy exactly the length you need and cut it to suit each reservoir.
Do I need a non-return valve?
Fit one in the line if the pump sits below water level. It stops water back-siphoning into the pump.
Which systems is it for?
Any system aerated by an air pump, including DWC, RDWC and other reservoir setups.
How should I cut it?
Use sharp scissors for a clean, square end that seats fully on the fitting.
