Swell Variable Flow Pond Pump Premium

Durable pond pumps with adjustable flow rates

At a glance...
  • Versatile pond pump for garden ponds, water features, and more
  • Includes control box so you can adjust flow rates
  • Available in different sizes to suit all needs
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Really quick delivery. The pump I ordered was the 35000 variable and it's so powerful I've had to turn it down. Brilliant pump and service.


What are these pond pumps?

This Swell Variable Flow Pond Pump Premium range is made up of three high quality pond pumps that, thanks to their adjustable flow rates and powerful motors, can be used in almost any kind of garden pond, from small wildlife ponds to large Koi ponds.

These pond pumps range in strength from the 75W 10000 model with a maximum flow rate of 10,000 lph, to the 500W 35000 model with a maximum flow rate of 35,000 lph. They all have a 5mm solids-handling capacity and an A-graded efficieny rating, making them a great cost-effective alternative to other pond pumps.

Whether you're planning to pump pond water to a pond filter, some water features, or just improve circulation in your pond, these pond pumps are the perfect choice. Partner one of these pond pumps with a pond filter, like one of our pressurised pond filters or pond box filters, and you'll have no problems maintaining a healthy pond.

Key Features:

  • Flow rate = 10,000-35,000 lph
  • Adjustable flow rate
  • Comes with weatherproof controller
  • 5mm solids-handling capacity
  • Low maintenance and energy efficient
  • Can be wet installed or dry installed
  • Can be hard piped
  • Suitable for use with pond filters and water features
  • Partner with a filter for a thriving, healthy pond

What are the benefits of variable flow pond pumps?

There are many reasons why pond keepers choose pond pumps with an adjustable flow rate. First and foremost, they're incredibly energy efficient. By reducing flow rate you'll dramatically cut down on energy costs, making sure you can enjoy your hobby without it burning a hole in your pocket.

These pond pumps can be adjusted from 1-100% flow. 100% will match the pump's maximum flow rate, while 1% will clock in at 0.01x the pump's maximum flow rate. It's up to you what % flow rate you opt for, and you can easily change this % using the weatherproof external controller provided.

Another great feature of these pond pumps is that they can be ran submerged (inside your pond) or dry (outside your pond). If you're planning to run one of these pond pumps externally, then you'll need to prime it first.

Ultimately, no two ponds are the same. By purchasing a pond pump with an adjustable flow rate, you can dial it into your pond's specific needs. This is the best way to ensure that your garden pond is kept a healthy pond year-round.

Can these pond pumps handle waste solids?

Yes, all three pond pumps in this Swell Variable Flow Pond Pump Premium range have a 5mm solids-handling capacity. This means that they can handle abrasive waste solids that may have built up inside your pond, like sludge, grit, and debris.

These pond pumps come with strainer cages that prevent large solids (or fish) from being sucked into the pond pump, when used internally. This ensures particles only up to 5mm in size are able to pass through, increasing the overall longevity of the pump.

By stopping large particles from passing through the pump, flow rate is kept as efficient as possible. These solids-handling pond pumps are also less likely to get blocked up and need cleaning, but if they do just detach the strainer cage, give it a good scrub in a bucket of pond water, and remove any excess muck.

What size pond pump do I need?

This range of pond pumps includes three models, suitable for medium to large-sized garden ponds. There are lots of things to consider before you make your choice, like max flow rate, max fountain height, and wattage. We've tried to simplify this process by listing the specifications of these pond pumps in an easy-to-read table below.

For more information about how to choose the right size pond pump for your garden pond, check out our help guide here.

What comes with these pond pumps?

These pond pumps come with a stepped hosetail adapter (32-50mm) that's comptable with a wide range of pond hose pipes. We recommend you hook it up to some anti-kink pond hose (sold separately) for optimum performance. You'll also want to pick up some hose clips (also sold separately) to make sure everything is kept locked down and secure. 

Also, please note the following:

  • To comply with UK electrical legislation, these pond pumps are NOT supplied with a fitted plug. You'll have to purchase a fitted plug separately.
  • The pond pump's impeller is a consumable part that, over time, can wear down. This component is not covered by the guarantee on the pond pump. A spare can be purchased as and when required, though.


Cable length 10m
Fitted plug To comply with UK electrical legislation, pond appliances can't be supplied with a fitted plug, so you'll need to purchase one separately or wire it into an outdoor plug socket.
Energy efficiency A
Guarantee 2 years
Hosetails included 32-50 mm
Solids handling and capacity Yes, 5mm



Model Variable Flow Pond Pump Premium 10000 Variable Flow Pond Pump Premium 20000 Variable Flow Pond Pump Premium 35000
Max head height 3.1m 5.5m 5.5m
Power 75W 190W 500W
Max flow rate 10,000lph 20,000lph 35,000lph
Inlet size 1.5" 2" 2"
Outlet size 1.5" 2" 2"
Dimensions 267 x 122 x 162mm 319 x 142 x 181mm 370 x 155 x 205mm


Variable Flow Pond Pump Premium Flow Curve Chart

Values applicable for each pump when running at 100% power

Model Power Max head height 1m 2m 3m 4m 5m
Variable Flow Pond Pump Premium 10000 75W 3.1m 7,000lph 5,000lph 3,500lph 1,500lph -
Variable Flow Pond Pump Premium 20000 190W 5.5m 15,500lph 12,500lph 10,000lph 7,500lph 4,000lph
Variable Flow Pond Pump Premium 35000 500W 5.5m 23,000lph 18,500lph 14,500lph 10,000lph 4,000lph
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