Pond Pumps

A pump is what keeps a water feature working. It pushes water through filters, up to waterfalls and spillways, and through skimmer boxes so the pond does not sit still.

Moving water supports oxygen exchange and helps waste travel to the filter rather than settling on the bottom. That helps keep stagnant areas, mosquito breeding, and low oxygen in check, which matters most when fish are in the pond.

A pump earns its keep on:

• koi ponds and water gardens with fish
• waterfalls, streams, and spillways
• skimmer boxes and filtration circuits
• pondless features that hold no standing water

Because a pump runs all day, its motor design and energy draw matter as much as its flow. If aeration rather than circulation is the main goal, compare our pond aerators.

The first decision is where the pump sits and how much control you want over its output.

• Submersible pumps, hidden in the pond or a skimmer box
• External pumps, sitting on dry land beside the feature
• Variable-speed and commercial pumps, for adjustable or high-volume flow
• Solids-handling or clear-water pumps, matched to how much debris reaches the intake

Submersible pumps

Choose a submersible pump when you want it hidden in the pond or inside a skimmer box with simple plumbing. They run quietly and suit small to medium ponds, water gardens, and decorative features.

PondHaven carries submersible models from Anjon, Savio, ShinMaywa, EasyPro, and Blue Thumb. Two reference points: the Savio WaterMaster Solids passes debris up to 1 inch, and the EasyPro TM Series moves 9,500 to 17,500 GPH depending on the model.

External pumps

Choose an external pump when the feature is large or the flow is high, and you want the pump on dry land where it is easier to reach for service.

The Anjon LandShark, Anjon DAB E. Swim, EasyPro VSP165, and Blue Thumb external models all sit outside the water.

Variable-speed and commercial pumps

Choose variable speed when you want to dial flow up for a full waterfall or down for a quieter, lower-cost run. The EasyPro VSP165 adjusts motor RPMs with digital controls, and the Anjon DAB E. Swim is programmable.

For demanding professional features, the ShinMaywa CNL cast iron pumps use 3-phase motors and pair with the ShinMaywa Variable Speed Pump Control Panel, which lets them run on standard single-phase residential power.

Solids handling or clear water

Choose a solids-handling pump when it draws from open pond water carrying leaves and fish waste. Choose a clear-water pump when the water reaches it through a skimmer or pre-screen and you need higher pressure for tall spills, such as the Savio Water Master Clear.

If the goal is a decorative spray rather than moving volume, compare our pond fountains. For another pump line, see Sequence pumps.

Two numbers matter most: the flow you need and the height you need to push it.

• gallons per hour required at the feature
• total dynamic head, meaning vertical lift plus pipe friction
• how much debris reaches the intake
• pipe size that suits the flow you are moving

Flow rate

A common starting point is circulating the pond's volume about once per hour. For a rectangular pond, estimate volume as length x width x average depth x 7.5 gallons. For a round pond, use diameter x diameter x average depth x 5.9 gallons.

Waterfalls and streams normally need flow beyond that turnover figure, so budget extra GPH for them.

Head height

Head height is the vertical rise from the water surface to the top of the waterfall, plus friction from the pipe run, elbows, and fittings. Together those make the total dynamic head.

Read a pump's flow rate at your total dynamic head, not at zero feet of head. Every pump moves less water as the lift increases.

Debris and plumbing

Open pond water with leaves and fish waste calls for a vortex impeller and solids handling, as on the Anjon Monsoon and EasyPro TH Series. Undersized tubing adds friction loss and works the motor harder, so match pipe size to the pump's output.