Active Aqua 3W Air Pump (125 GPH) - 2 Outlets

With two independent outlets, this pump can directly aerate two separate buckets or reservoirs simultaneously. It is an ideal choice for smaller multi-site setups like the Active Aqua Root Spa 4 Bucket Deep Water Culture System when using splitters, though running one air stone per outlet without splitting delivers the best aeration performance.

The 3W / 125 GPH model offers 2.5x the airflow of the Active Aqua 2W Air Pump (50 GPH) and adds a second independent outlet — making it the natural step up for growers who've outgrown single-site aeration. Both models share the same 40 dB noise rating and multi-level muffler design, so the upgrade in capacity doesn't come with a noise penalty.

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

Yes — inline check valves on both airlines are strongly recommended whenever the pump is positioned at or below the reservoir waterline, which is common in systems like the Active Aqua Grow Flow 12 Site Ebb & Flow Hydroponic Grow System. If power is interrupted, check valves prevent nutrient solution from back-siphoning through the tubing and into the pump body, which can permanently damage the diaphragm.

Both outlets accept standard ¼" (0.25") airline tubing — the most common size used across hydroponic aeration accessories. Active Aqua's compatible tubing is item HGTB25, available separately. All standard ¼" air stones, tees, check valves, and gang valves connect directly without adapters.

Yes. At 3 watts and 0.03A draw, this pump is designed for always-on continuous operation in active hydroponic systems. The synthetic rubber diaphragm is built to maintain consistent output under sustained use, and the low wattage means running it around the clock adds negligible cost to your facility's energy bill.

If you're running more than two aeration sites, need significantly higher per-stone flow rates, or are planning to scale beyond a two-bucket setup, the Active Aqua lineup offers higher-output models like the Active Aqua 12W Air Pump (400 GPH) or the Active Aqua 20W Commercial Air Pump (700 GPH). The 3W / 125 GPH model is purpose-matched for two-site applications — pushing it beyond that range by heavily splitting each outlet will reduce per-stone aeration below effective levels for most hydroponic root zone requirements.