Active Aqua 6W Air Pump (240 GPH) - 4 Outlets

With four independent outlets at 240 GPH total output, this pump delivers approximately 60 GPH per outlet when all four are in use — sufficient for effective single air stone aeration at each site. Each outlet can also be split further with standard ¼" tees, though per-stone flow will decrease with each additional split. For best performance across a four-bucket DWC setup, run one air stone per outlet without splitting.

The 6W / 240 GPH model doubles both the outlet count and total airflow of the 3W / 125 GPH dual-outlet pump — making it the natural step up for growers moving from a two-site to a four-site setup. The noise floor increases slightly from 40 dB to 45 dB, which remains well within quiet operation range for most grow room environments.

The pressure dial adjusts overall pump output rather than per-outlet flow individually. For independent per-line control, inline gang valves or flow control valves on each airline are the recommended approach — these allow precise per-stone adjustment without affecting the other three outlets and are widely available in standard ¼" tubing sizes.

Yes — inline check valves on all four airlines are strongly recommended whenever the pump is positioned at or below the reservoir waterline. A power interruption without check valves can allow nutrient solution to back-siphon through all four lines simultaneously and into the pump body, causing permanent diaphragm damage. Standard ¼" check valves are inexpensive and should be considered a standard part of any aeration installation.

Yes. At 6 watts and 0.08A draw, this pump is built for always-on continuous operation in active hydroponic systems. The synthetic rubber diaphragm maintains consistent output under sustained use, and the low wattage keeps the contribution to your facility's energy bill negligible even running around the clock across an entire grow cycle.

If you're running more than four aeration sites, such as an 8-bucket DWC system, or need to distribute airflow across a large centralized reservoir, the Active Aqua Dual Diaphragm Air Pump at 25 L/min is the appropriate next step — it offers four outlets with significantly higher per-outlet output and replaceable diaphragms for long-term commercial use. The 6W model is purpose-matched for four-site applications at moderate output requirements.

All four outlets accept standard ¼" (0.25") airline tubing — Active Aqua's compatible tubing is item HGTB25, available separately. Standard ¼" air stones, tees, check valves, and gang valves connect directly to all four outlets without adapters, making this pump compatible with the full range of commonly available hydroponic aeration accessories.