Active Aqua Dual Diaphragm Air Pump — 25 L/Min, 4-Outlet

Quiet 4-Outlet Aeration for Multiple Buckets or Reservoirs

Dissolved oxygen starvation in a bucket or reservoir shows up as slowed growth and root stress before it's obvious from the surface, and a single-outlet pump forces growers to either run multiple pumps or split airflow with add-on splitters. The Active Aqua Dual Diaphragm Air Pump delivers up to 25 L/minute of airflow across four separate outlets from one unit, sized to aerate multiple buckets or a larger reservoir from a single pump.

With the addition of distribution tees, this pump can aerate up to twelve buckets or reservoirs from its four outlets, making it a practical single-pump solution for a small deep water culture row rather than running four separate pumps.

Key Features & Benefits

• 25 L/min total output — spread across four outlets rather than concentrated in a single line.
• Dual diaphragm design — keeps airflow steady and quiet compared to a single-diaphragm pump of similar output.
• Four separate outlets — run up to four lines directly, or more with distribution tees.
• Expandable to twelve buckets — distribution tees split each outlet further for larger DWC rows.

Who Should Use This Air Pump

Growers running multiple deep water culture buckets or a single larger reservoir who want one pump instead of several are the fit for this dual diaphragm design.

About Active Aqua

Active Aqua's aeration equipment, distributed through Hydrofarm, includes this dual diaphragm pump alongside the brand's single-outlet air pumps and metal air manifolds.

Frequently Asked Questions

How many buckets can this pump support?

With distribution tees added to each of its four outlets, it can aerate up to twelve buckets or reservoirs from a single pump. Without tees, it runs up to four lines directly, one per outlet.

How loud is it running?

The dual diaphragm design is built to run quieter than a comparable single-diaphragm pump at a similar output level. That matters most in living spaces or shared rooms where pump noise is a bigger factor than in a dedicated grow room.

Do I need a replacement part when airflow drops?

Yes, weakening airflow over time is a common sign the internal diaphragms are wearing out rather than a sign the pump itself has failed. Active Aqua sells a matching replacement diaphragm pack (AADARD) sized for this pump.

Can I run all four outlets at once?

Yes, the pump is built to run all four outlets simultaneously at its rated 25 L/min combined output. You don't need to cap or restrict unused outlets.

Is this pump submersible?

No, air pumps like this one are designed to sit outside the reservoir and push air through tubing to submerged air stones. Submerging the pump itself would damage it.