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To maintain good water quality in your outdoor pool, you must install at least one pump and one filter. If both work in complementarity, they each have a specific role to play. And choosing a pump is not easy... What are the technical characteristics to know to choose the pump of your pond?

What is the role of a pump in a garden pond?

In your pond, the pump has different functions:

  • Brewing pump: It brews and agitates the water surface to aerate and oxygenate.
  • Lift pump: It goes up the water at the top of a waterfall or a stream or so it feeds a jet of water.
  • Feed pump: It leads to the filter, the water to be purified with plant debris and other dirt in suspension.

The same pump can perform all of these functions. But depending on the volume of your pond, it is advisable to have a pump dedicated to the filter supply and another, which may be less important, to run a water jet. In addition, you can stop it during the night.

What are the characteristics of a pond pump?

Knowing these characteristics will allow you to choose the pump adapted to your pool and the use you intend to make of it. Do not hesitate to seek advice from a specialist.

  • The flow of the pump: The flow required is directly related to the volume of water in your pond and the power of your filter.
    To determine the flow rate you need, calculate that all the water in the pond must have passed through the filter in about 3 hours. Add to this figure 10 to 20% to compensate for the energy needed by the pump to draw water to the filter (discharge).
  • The lift height: This figure gives the maximum discharge height of the pump.
    You must calculate the distance between the pump and the filter. If they are 1 m away, you must have a discharge height of at least 1 m.
    The height of the discharge is proportional to the flow rate of the pump. Also remember to consider the section of the pipes between the pump and the filter.
  • The ability to operate in or out of the water: If your pump is to run in water, you must place it at the bottom of the pond but on a raised support. It will foul less quickly.
    A pump that can operate out of the water will be easier to clean. On the other hand, they are more often pumps with discharge than with aspiration. You must therefore install it outside the pool but lower than the water level.
    Some pumps operate indifferently in and out of the water.

The specificities of a good pond pump

Once you have determined the flow and the lift you need, be careful of the specificities offered by the different manufacturers:

  • Power consumption: Your pump will rotate continuously from spring to autumn. The newest models are much more economical. You can even begin to find models that run on solar energy and come with photovoltaic panels.
  • The ease of cleaning the pump: Over time, it will get dirty and you must be able to easily access the items to clean.
  • Pre-filter or strainer: They avoid the clogging of the pump with debris suspended in the water. Depending on the pump models, they are more or less fine.
  • The flow regulator: This function will allow you to adjust the height of a water jet.
  • The floating pump: Equipped with floats, it evolves on the surface of the basin quite independently of the water level. It is mainly used to oxygenate the pelvis.
  • The accessoriesDepending on the model, you can adapt various accessories to the pump, such as a water jet or a skimmer.

Do not hesitate to slightly oversize your needs. Some extra fish, an occasional imbalance and you will need more power.
And if in doubt, seek professional advice.

Pump for garden pond

FAQ - 💬

❓ What kind of pump do I need for a small pond?

👉 Submersible pumpsSubmersible pumps can be used to drain your pond, if needed. Range in pumping size from 50 to 5,000 gallons per hour. Can generate higher energy costs than other pump types. For smaller ponds, submersible pumps are generally more economical.

❓ How strong of a pump do I need for pond?

👉 It is recommended that pond water is circulated at least once per hour. For example, if you have a 500-gallon pond, you need a pump that runs 500 GPH at the height of the discharge.

❓ What is the best pump to drain a pond?

👉

  • BEST OVERALL: VIVOSUN 4500GPH Submersible Water Pump.
  • BEST BANG FOR THE BUCK: Knifel Submersible Pump.
  • UPGRADE PICK: Tetra Pond Debris-Handling Pump.
  • BEST FOR SMALL PONDS: Aquagarden Water Pump for Ponds.
  • BEST FOR LARGER PONDS: TotalPond 2000 GPH Waterfall Pump.

❓ What size water pump do I need for my garden?

👉 As a guide to maintain a good flow rate, for every 0.5m lift, a 500 litre pump would be required (1m lift will require a 1500 litre pump), you are always better to go bigger though. For larger ponds to run a fountain and a large waterfall, a 4000 litre per hour pump is required as a minimum.

❓ Can fish live in a pond without a pump?

👉 Without a pump, not only is the water not being filtered, but the healthy bacteria in your pond can deplete. If your pump is faulty during the winter, it is likely that your fish will survive for a while because they are hibernating. They will produce less waste; use less oxygen and they will have a lower metabolism.

❓ How do I make my pond water clear naturally?

👉 How To Get A Clean Pond In 5 Easy Steps

  1. Aerate Your Pond. Whether you have a small decorative pond, a koi pond, a larger pond or even a small lake, aerating and/or agitating the water definitely help keep your pond clean. ...
  2. Invest In A Pond Rake. ...
  3. Add The Right Plants. ...
  4. Add Colorant. ...
  5. Add Beneficial Bacteria.

❓ What is the difference between a pond pump and a waterfall pump?

👉 Direct Drive Pond Pumps are stronger pumps usually referred to as a Waterfall Pump and best used for taller waterfalls and higher head lift situations. Direct Drive pumps usually take a little more energy since they are more powerful and since they have more parts that can wear down usually have a shorter warranty.

❓ How can I pump water from my pond without electricity?

👉 The windmill aerator is an effective way to aerate the water without using electricity. Powered by the wind, it requires a minimum of 3 to 5 mph of wind. When the wing whirls round quickly, it generates power, collects air, and pumps air into the pond.

❓ Should you leave a pond pump on all the time?

👉 A pond's pump should run 24 hours each day to ensure the pond's water circulates through the filter to keep the water clear.

❓ How do I get water out of my pond without a pump?

👉 Unless you want to form a bucket brigade, your best bet for emptying your pond without a pump is to syphon the water to a hillside or open drain. Get a hose (without any leaks), place one end at the lowest point in the pond's basin, and the other end at a point lower in elevation than that.

❓ How do I circulate water in my pond without a pump?

👉 Windmill Aerators The windmill aerator is an effective way to aerate the water without using electricity. Powered by the wind, it requires a minimum of 3 to 5 mph of wind. When the wing whirls round quickly, it generates power, collects air, and pumps air into the pond.

👉 Amazon.com: Water Garden & Pond Pumps - Water Garden & Pond Pumps / Water Garden & Pond Pump...: Patio, Lawn & Garden Price and other details may vary based on product size and color. Only 11 left in stock - order soon.

👉 The best pond pump will have at least three methods of filtering the water. When buying a pond pump, you also need to consider the flow rate. If you have plants and goldfish, the pump needs to circulate at least 50% of the pond’s water every hour.

👉 While there are many functions performed by a water pump, it all boils down to two main basic functions that are acquired: aeration and decorative. Aeration means the ventilation of the water of the pond. For all the living beings in the water and the water body itself needs oxygen to live, breathe and stay fresh.

👉 If your pond is densely stocked, your pump should circulate the entire volume of water every hour. That means that if your pond is 1,200 gallons, your pump should supply a flow rate of 1,200 GPH at the head height of the outlet.


Video Instruction: 10 Best Pond Pumps 2018