Product Overview
The Fluval U4 Internal Aquarium Filter delivers powerful 3-stage filtration for freshwater and marine aquariums up to 240 litres.
Featuring adjustable 3-way flow control, versatile installation options and complete mechanical, chemical and biological filtration, the U4 is ideal as a primary filter for medium to large aquariums or supplementary filtration for larger systems.
Suitable For
- Freshwater aquariums up to 240 litres
- Marine aquariums up to 240 litres
- Turtle and reptile habitats
- Primary filtration for medium and large aquariums
- Supplementary filtration for larger aquariums
Key Features
- Complete 3-stage filtration
- Adjustable 3-way flow control
- Vertical or horizontal installation
- Flip-top lid for quick media maintenance
- Includes Bio-Foam Pads, Poly-Max Cartridges and BIOMAX biological media
- Suitable for freshwater, marine and reptile environments
- Made in Italy
Technical Specifications
- Aquarium capacity: Up to 240 litres
- Maximum flow rate: 1000 LPH
- Power consumption: 10W (230–240V)
- Dimensions: 33 × 10 × 11cm





