Pond Construction & Pond Supplies

The right pond pump depends mainly on the place of use, the size of the pond, and the required head height. For swimming ponds or situations where the pump needs to be placed directly in the water, safe 12-volt pumps, such as the AquaForte LV pumps, are ideal. If you need to move large volumes of water with low head height – for example in shallow zones or wide streams – pipe pumps like the AquaForte HV Vario S or highly energy-efficient high-performance models like the Oase AquaMax Eco Titanium series are excellent choices. If the pump is to be installed dry, reliable and easily adjustable solutions such as the AquaForte DM Vario series (optionally with Wi-Fi control) are recommended. For demanding applications that require maximum power – such as large ponds, long filtration routes or waterfalls – high-performance pumps like the Oase AquaMax Eco Expert series are the perfect choice.

The required flow rate depends primarily on the type of pond and the desired turnover rate. For koi ponds, the entire pond volume should be circulated every 1 to 1.5 hours to maintain optimal water quality for the sensitive koi. In a fish pond without intensive stocking, circulating the water 2 to 3 times per hour is sufficient. In a swimming pond without fish, a significantly lower turnover rate is needed — the entire volume should be circulated every 4 to 6 hours. The calculation is simple: Pond volume ÷ desired turnover period = required pump capacity (litres per hour). This allows you to quickly determine the correct pump size to ensure clear water and a stable pond ecosystem.

Whether a pond pump should run continuously depends on its purpose. If the pump supplies a pond filtration system, the answer is clearly yes — if the filter stops, the biological filtration begins to die off after a short time. Adjustable pumps can reduce turnover during winter, but the filter should never be completely shut down. It is different with water features or streams: these can be switched off at night or during cold periods to prevent the pond from cooling down — especially important if fish or other animals live in the pond. This keeps the water quality stable while avoiding unnecessary energy use.

The main difference lies in the function and purpose of the pump. A filter pump continuously transports water through a pond filtration system, which is responsible for cleaning and stabilising the entire pond ecosystem. Such a system typically combines several filtration methods: - mechanical filtration to remove coarse debris - biological filtration to break down organic substances - UV light, which helps reduce germs and suspended algae - chemical filtration processes that can bind or neutralise certain substances A fountain pump, on the other hand, is designed primarily for decorative purposes such as fountains, water features or small streams. It provides movement and oxygenation but does not offer complete water filtration, making it unsuitable as the main pump for a filtration system. In summary: Filter pumps clean the water — fountain pumps create visual effects. For a clear and stable pond environment, a proper filter pump is always required.

To ensure long-term reliability and performance, your pond pump should be cleaned and descaled regularly. Generally, maintenance is recommended 1–2 times per year. The required frequency depends heavily on the lime (calcium) content of the water. High lime levels can cause deposits that reduce performance or even damage the pump — such lime damage is usually not covered by warranty. Maintenance is especially important after refilling a pond: within the first 1–2 months, significant lime precipitation may occur. Therefore, a first thorough cleaning is recommended during this period. Afterwards, depending on water hardness, regular maintenance every few months is sufficient. Regular care ensures optimal performance, protects the pump and significantly extends its lifespan.