Eheim External Filter Professionel 4 800

Large, ambitious aquariums need filtration that combines power, efficiency and reliable performance. This powerful external filter by Eheim has been specially designed for aquariums of up to 800 litres and is ideal for both freshwater and marine setups.

Its square design not only ensures stable positioning inside the aquarium cabinet, but also makes excellent use of the available filter volume. A particularly practical feature is the pre-filter positioned directly beneath the pump head. It captures coarse dirt before the water reaches the biological filter stages, helping to extend the service life of the biological filter media and reducing the need for full cleaning.

The integrated priming aid makes restarting after cleaning quick and effortless, activating the water circuit without complicated manual suction. Thanks to the precision ceramic shaft and perfectly matched bearings, the filter runs quietly with minimal vibration, even in continuous operation. The cleverly designed hose adaptor disconnects the connections reliably and without dripping, while robust locking clips keep the filter securely sealed.

Highlights at a glance:

• Large filter volume: Square shape for excellent use of space and long service intervals.
• Efficient pre-filter: Quick cleaning in the upper section helps protect the important microorganisms in the main filter.
• Easy start-up: Integrated priming aid allows the filter to be started without laborious manual suction.
• Quiet operation: Wear-resistant ceramic shaft helps ensure very low noise levels.
• Flexible use: Perfect for large freshwater and marine aquariums.

Technical details: