$15 Flat Rate Shipping On All Orders

The Ultimate Pond Pump Buying Guide Finding the Best Fit for Your Water GardenWelcome to the ultimate pond pump buying guide, where we dive deep into finding the perfect fit for your water garden. Whether you're a seasoned pond enthusiast or just starting out, this comprehensive guide will help you make an informed decision and keep your water feature thriving.

At We Know Water Gardens, we understand the importance of finding the right pond pump that suits your specific needs. That's why we've compiled all the essential information you need to know, from understanding the different types of pumps to calculating the ideal flow rate for your pond.

In this guide, we'll walk you through the top considerations when choosing a pond pump, including factors like pump size, energy efficiency, and ease of maintenance. We'll also provide helpful tips on installation and troubleshooting, ensuring that your water garden stays in tip-top shape.

Whether you're looking to create a tranquil oasis or a vibrant aquatic ecosystem, finding the best pond pump is key to a successful water garden. So, let's begin our journey and find the perfect pump that will make your water garden dreams come true. Let's dive in!

Importance of a Pond Pump in a Water Garden

A pond pump plays a crucial role in maintaining the health and vitality of your water garden. It is responsible for circulating and aerating the water, which is essential for the well-being of fish, plants, and other aquatic life. Without a pond pump, stagnant water can become a breeding ground for algae, mosquitoes, and other pests.

Additionally, a pond pump helps to filter out debris and organic matter, keeping the water clear and preventing the buildup of harmful bacteria. It also helps to distribute oxygen throughout the pond, ensuring that fish and plants receive the necessary nutrients for growth and survival.

Overall, a pond pump is the heart of your water garden, providing the necessary circulation and filtration to create a balanced and thriving ecosystem.

Types of Pond Pumps

When it comes to choosing a pond pump, there are three main types to consider: submersible pumps, external pumps, and solar pumps.

Submersible Pumps

Submersible pumps are designed to be fully submerged in the water, making them ideal for small to medium-sized ponds. They are easy to install and maintain, as they can be placed directly in the pond without the need for additional plumbing. Submersible pumps are also generally more energy-efficient and quieter compared to external pumps.

External Pumps

External pumps are installed outside the pond, usually in a separate pump chamber or housing. They are suitable for larger ponds or water features that require higher flow rates. External pumps are known for their durability and high performance, making them a popular choice among pond enthusiasts. However, they can be more challenging to install and require additional plumbing work.

Solar Pumps

Solar pumps are powered by solar energy, making them an eco-friendly and cost-effective option for water gardens. They are typically used for smaller ponds, such as patio ponds, water bowls or decorative fountains, as they have lower flow rates compared to submersible or external pumps. Solar pumps are easy to install and operate, as they do not require electricity or complicated wiring.

Factors to Consider When Choosing a Pond Pump

Choosing the right pond pump involves considering several factors to ensure that it meets the specific needs of your water garden. The three main factors to consider are flow rate, head height, and energy efficiency.

Flow Rate

The flow rate of a pond pump refers to the amount of water it can circulate within a given period. It is measured in gallons per hour (GPH) or liters per hour (LPH). To determine the ideal flow rate for your pond, you'll need to consider the volume of water, the desired turnover rate, and the types of aquatic life in your pond.

A general rule of thumb is to aim for a turnover rate of at least once every hour for smaller ponds and once every two hours for larger ponds. However, if you have a fish-heavy pond or a water feature with high waterfalls or fountains, you may need a higher flow rate to maintain proper aeration and circulation.

Head Height

Head height refers to the vertical distance that the pump needs to lift the water from the pond's surface to its destination, such as a waterfall or fountain. It is crucial to consider head height when choosing a pond pump, as it determines the pump's ability to deliver water effectively.

As the water is lifted higher, the pump's flow rate decreases. Therefore, it's important to select a pond pump that can handle the required head height while still providing the desired flow rate. Most pond pump manufacturers provide flow rate charts that indicate how the pump's performance varies at different head heights.

Energy Efficiency

Energy efficiency is an important consideration when choosing a pond pump, as it can have a significant impact on your energy consumption and operating costs. Look for pumps that are labeled as energy-efficient or have a high energy efficiency rating (EEI).

Pumps with variable speed motors are also a great option, as they allow you to adjust the flow rate according to your needs, resulting in lower energy consumption. Additionally, consider pumps that are equipped with energy-saving features like timers or sensors that automatically adjust the pump's operation based on water temperature or demand.

By choosing an energy-efficient pond pump, you not only reduce your environmental footprint but also save money in the long run.

Determining the Right Size of Pond Pump for Your Water Garden

Determining the right size of pond pump for your water garden is crucial to ensure proper circulation and filtration. To calculate the appropriate pump size, you'll need to consider the volume of water in your pond, the desired turnover rate, and the head height.

To calculate the volume of water, multiply the average length, width, and depth of your pond. For irregularly shaped ponds, you can divide the pond into sections and calculate each section separately. Once you have the total volume, you can determine the desired turnover rate based on the guidelines mentioned earlier.

Next, consider the head height by measuring the vertical distance from the water's surface to the highest point of water discharge. Keep in mind that head height can vary depending on the layout of your water garden, so it's essential to measure accurately.

Using these measurements, consult the pump's flow rate chart provided by the manufacturer to find the appropriate pump size that meets your requirements. It's always recommended to choose a pump with a slightly higher flow rate than necessary to account for any potential loss due to friction or clogging.

Additional Features to Look for in a Pond Pump

In addition to the basic considerations mentioned earlier, there are several additional features that you may want to look for in a pond pump to enhance its functionality and performance.

Adjustable Flow Control

Pond pumps with adjustable flow control allow you to regulate the water flow according to your needs. This feature is particularly useful if you have different water features in your garden that require varying flow rates, such as waterfalls, fountains, or streams. Having control over the flow rate enables you to create different water effects and customize the ambiance of your water garden.


A pre-filter is a beneficial feature that helps to prevent debris and large particles from clogging the pump. It acts as a barrier, trapping leaves, twigs, and other debris before they enter the pump, reducing the risk of damage and maintenance. A pre-filter also makes it easier to clean and maintain the pump, as you can simply remove and clean the filter without accessing the pump itself.

Ultra Violet Clarifier

If you're struggling with algae growth in your pond, consider a pond pump with a built-in UV clarifier. UV clarifiers use ultraviolet light to destroy algae cells, preventing them from multiplying and causing water discoloration or clarity issues. This feature can significantly reduce the need for chemical treatments and help maintain a clear and healthy pond.

Installing and Maintaining Your Pond Pump

Installing a pond pump may seem daunting at first, but with the right guidance, it can be a straightforward process. Here's a step-by-step guide to help you with the installation:

1. Choose the ideal location for your pump, considering factors like accessibility, noise level, and proximity to the water feature.

2. Connect the necessary plumbing, such as hoses or pipes, to the pump's intake and discharge ports. Ensure that all connections are secure and watertight.

3. Place the pump in the desired location, whether it's submerged in the pond or installed externally. Make sure the pump is stable and level to prevent vibration or noise issues.

4. Connect the pump to a power source, ensuring that the electrical components are protected from water exposure.

5. Test the pump to ensure proper operation and check for any leaks or abnormal sounds.

6. Adjust the flow rate and direction of the water as needed to achieve the desired effect.

To maintain your pond pump and keep it running smoothly, regular maintenance is essential. Here are some tips to help you maintain your pump:

- Clean the pre-filter regularly to prevent clogging and ensure optimal performance.

- Inspect the pump and plumbing for any signs of damage or wear. Replace any worn-out parts or components.

- Remove any debris or leaves that may accumulate around the pump or in the pond to prevent blockages.

- Check the pump's impeller for any obstructions or buildup. Clean or replace the impeller if necessary.

- Monitor the pump's energy consumption and watch for any sudden increases, which may indicate a problem.

By following these maintenance tips, you can extend the lifespan of your pond pump and keep your water garden looking its best.

Popular Pond Pump Brands and Their Features

When it comes to choosing a pond pump, there are several reputable brands known for their quality and performance. Here are a few popular pond pump brands and some of their standout features:

1. Pond One Mantaray: A great choice when wanting to reach heights ranging Pond One Mantaray 6000 Filter Pumpfrom 3.2 - 6.5m, the Pond One Mantarayis a great beginners pump. The range is power efficient, reliable and there are 4 to choose from. Best used in conjunction with the claritec range of pond filter.

If you need more advice on choosing thePond One Claritec 5000Uv Pressurised Filter With 9Watt Ultra Violet Clarifier correct pond pump for your pond, email us here!


2. Oase: Offers a range of quality Oase Aquamax Eco Classic 17500 - 17,400lph, 3.7m head 170wsubmersible and external pumps with high flow rates and durable construction. The Aquamax range provides a powerful and efficient pond pump that is ideal for waterfalls, waterwalls and fountains.


3. PondMax: Specialises in solar-powered pumps that are environmentally PondMax Solar pumpfriendly and easy to install. The PondMax solar rangeprovides head height between 1.6 - 3m. he unit can run small statues and when fitted with the included fountain heads can provide aeration for fish. The unit is quick and easy to assemble and requires no tools. Flow rate can be controled with the built-in flow adjuster and the unit includes several fountain heads. It uses a quality solar panel and comes with a three-year warranty. Best results are achieved when the PondMax  Solar panel is positioned in a full sun north facing area. A back up battery is also available to keep things running over night!

Each brand has its own unique features and advantages, so it's important to research and compare different options to find the one that best suits your water garden's needs.

Pond Pump Accessories - Hoses, Fittings, and Connectors

To ensure a seamless installation and operation of your pond pump, you may need various accessories, such as hoses, fittings, and connectors. Here's a brief overview of these accessories:

- Hoses: Choose high-quality, flexible hoses that are resistant to kinks and cracks. Measure the required length and diameter of the hoses to ensure a proper fit.

- Fittings: Fittings are used to connect hoses, pipes, and other components. Make sure to use fittings that are compatible with your pump and plumbing system.

- Connectors: Connectors are used to join multiple hoses or pipes together. They help create a watertight seal and prevent water leakage.

When selecting accessories, prioritise quality and durability to ensure long-lasting performance and reduces the risk of leaks or malfunctions.

Troubleshooting Common Pond Pump Issues

Even with proper installation and maintenance, pond pump issues may arise. Here are some common problems and their possible solutions:

- Low or No Water Flow: Check for clogs in the pump or plumbing system. Clean or replace any clogged filters or impellers. Ensure that the pump is receiving adequate power supply.

- Excessive Noise or Vibration: Make sure the pump is level and stable. Check for loose or worn-out parts. Insulate the pump and plumbing to reduce noise transmission.

- Leaks or Water Loss: Inspect all connections for leaks. Tighten or replace any loose or damaged fittings. Ensure that the seals and gaskets are in good condition.

- Overheating: Check for any obstructions that may be blocking the pump's intake or discharge. Ensure proper ventilation and cooling of the pump. Reduce the flow rate if necessary.

If you're unable to resolve the issue on your own, it's recommended to seek professional assistance to avoid further damage or safety risks.

Final Tips for Choosing the Best Pond Pump for Your Water Garden

Choosing the right pond pump for your water garden is a crucial decision that can greatly impact the health and aesthetics of your pond. By considering factors like flow rate, head height, and energy efficiency, you can ensure that your pump meets the specific needs of your water garden.

Additionally, features like adjustable flow control, pre-filters, and UV clarifiers can enhance the performance and functionality of your pond pump. Regular maintenance and proper installation are essential to keep your pump running smoothly and prolong its lifespan.

Remember to research different brands and compare their features to find the best fit for your water garden. Lastly, don't hesitate to seek professional advice or assistance if you encounter any issues or have specific requirements.

With the right pond pump, your water garden can become a stunning oasis of tranquility or a thriving aquatic ecosystem. So, choose wisely and enjoy the beauty and serenity of your water garden for years to come.


© weknowwatergardens 2023