FLUVAL U4 Internal underwater Filter, 240 Litre

Fluval U4 Internal Aquarium Filter for Tanks up to 240L FLUVAL U4 Internal underwater Filter, Used but in very good condition The Fluval U4 Internal Filter is designed for small to medium sized aquaria, sitting neatly inside the tank for easy installation without pipes or hoses. Suitable for tanks up to a water volume of 240L, it filters up to 1000 litres per hour, making it a practical choice for both freshwater and saltwater applications. As part of the U series, the U4 combines water purification, movement and aeration in one unit, and can also work as a powerhead to improve water circulation. Its 3-stage filtration system uses a Bio-Foam filter pad, poly-carb pad and bio-max filter media to keep water clear and healthy. The adjustable 3-way flow control allows you to direct water output to suit your aquarium setup, while the quick flip-top lid makes maintenance simple. Regular cleaning of the impellor every couple of weeks helps keep the filter running efficiently. Key Features Internal filter suitable for small to medium sized aquaria Works as a powerhead for additional water circulation Designed for use in both freshwater and saltwater aquariums 3-stage filtration with Bio-Foam pad, poly-carb pad and bio-max filter media Adjustable 3-way flow control with Top Output, Integrated Spray Bar and Bottom Output settings Quick flip-top lid for easy access to filter media during maintenance Specifications Suitable for tanks up to 240L Filtration rate up to 1000 litres per hour Product dimensions: 33 x 10 x 11 cm Why It Keeps Your Water Cleaner 3-stage filtration removes large waste particles and refines water quality using bio-max media Adjustable flow settings let you tailor water movement for planted tanks, oxygenation or deepwater agitation Simple flip-top design allows quick maintenance without removing the whole unit from the tank Suitable for both fresh and saltwater setups, offering flexibility across different aquarium types Regular impellor cleaning every