Do I need an air pump if I already have a waterfall or fountain in my pond?

While waterfalls and fountains can help with aeration to some extent, they may not be enough to fully oxygenate the water in your pond, especially if you have a larger pond or lots of fish. Air pumps provide continuous aeration, ensuring that your pond has enough oxygen for fish to thrive. Plus, the bubbles created by air pumps can add a visually pleasing element to your pond, enhancing its overall aesthetics.

What size air pump do I need?

It’s generally recommended to choose a pump that is capable of circulating the entire volume of water in the pond at least once per hour. For larger ponds or deeper water, you may need a more powerful pump. Be sure to consider factors such as the number of fish in your pond and the presence of plants, as these can also impact the oxygen needs of your pond.

Have any questions? Read our pond pump FAQs below for more information.

Pond Air Pump FAQs

What is aeration and why is it important for ponds?

Aeration refers to the process of adding oxygen to a pond’s water. This is crucial for maintaining a healthy pond.

When a pond lacks sufficient oxygen levels, it can lead to problems like algae overgrowth, odours, and even kill fish. Aeration helps in maintaining proper dissolved oxygen levels by promoting water circulation and preventing stagnation.

This not only keeps the pond water clean and clear, but creates a healthy environment for fish, plants, and beneficial bacteria.

For more information, see: Why add aeration?

What types of ponds benefit from aeration?

Essentially, any pond can benefit from aeration. No matter your pond’s size, it can enhance water quality, prevent stagnation, and improve its overall health.

What is a pond air pump?

A pond air pump is a device that is used to increase the oxygen levels in a pond by pumping air into the water. It’s a necessary component for ponds with fish or plants, as they require oxygen to survive.

How does a pond air pump work?

The pump works by forcing air into your pond’s water, creating bubbles and agitation. This helps to increase oxygen levels, which is essential for the health of aquatic life like fish and plants. Without enough oxygen, your pond can become stagnant and prone to algae growth.

Types of pond air pumps

Blagdon Water Gardening supplies 5 types of air pumps for ponds:

Pond Oxygenator Kit 1/2/4 outlet: This kit contains the air pump, air stone and 5m air line. A great option for use in an outdoor water garden.

Pond Oxygenator 1800/2400/2600: High output air pump for ponds, specifically designed for water garden application. Available in three sizes to accommodate different ponds.

Liberty Pond Oxygenator Kit: Solar powered pond air pump with a battery backup. Includes 2x air stones and 2x 6ft airline. Ideal for ponds without access to electricity.

Pond Air: Available with one or two outlets. Discrete outdoor weatherproof water garden air pump kit with high output.

Koi Air 25/50/65: Able to run numerous air stones, creating a healthy oxygen rich pond for your fish. Both are cost effective to run, as it is of a low watt design.

Choosing the right pond air pump

When choosing a pond air pump, it’s important to consider factors such as:

• Pond size: Choose a pump that can adequately oxygenate the volume of water in your pond. The larger the pond, the more powerful the pump should be.
• Number of outlets: Consider how many air stones or diffusers you will need for proper aeration. Each outlet provides oxygen to a specific area, so ensure you have enough outlets for adequate cover.
• Power source: Determine whether you have access to electricity or if you need a solar-powered option.
• Noise level: Some air pumps can be noisy, so consider how close your pond is to your living area or if noise is a concern for you.
• Durability: Look for an air pump that is made to withstand outdoor conditions. This will ensure that it lasts long and can withstand various weather conditions.
• Energy efficiency: Consider the energy consumption of the air pump. Look for models that are energy-efficient and consume less power while still providing adequate oxygen.

Can my air pump be left running all year-round?

While some pumps are designed to be used year-round, others may need to be taken out of operation during the colder winter months. If you’re unsure, check your systems manual for guidance.

How often should I run my pond air pump?

We recommend running your pond air pump 24/7, to ensure optimal oxygenation and water flow. It also helps to prevent stagnant water and improves quality.

Are pond air pumps noisy?

Modern air pumps are designed to operate quietly. That said, some noise may still be generated as the motor runs. With proper placement and care, the noise level of a pond air pump should be minimal and easily ignored.

You can minimise any potential noise by placing the pump on a soft and stable surface that can absorb vibrations. Also place the pump away from areas where you spend a lot of time, such as sitting areas.

Do I need a separate pump for my waterfall or fountain?

In most cases, a separate pump for your waterfall or fountain is not necessary if you already have a pond air pump. However, if you have a large waterfall/fountain that requires additional power, you may consider using a separate pump.

For more information on aeration and air pumps, please check out Aeration Q&As.