FLUVAL U1 Internal Filter

FLUVAL U1 Internal Filter is a compact, high-performance aquarium filter designed to deliver outstanding water quality through advanced 3-stage filtration, enhanced water circulation, and essential aeration. Ideal for aquariums up to 55 litres, the Fluval U1 is the perfect solution for hobbyists seeking reliable internal filtration when an external filter is not practical.

Featuring a sleek modern design, the Fluval U1 Internal Filter is suitable as a primary filtration system for smaller aquariums or as a supplementary filter in larger setups. Its versatile installation options allow the unit to be positioned either horizontally or vertically, enabling customised water flow patterns to suit a wide range of aquatic environments.

The redesigned filter cartridge is engineered to capture more debris, helping to keep aquarium water clearer for longer. Maintenance is simple thanks to the convenient flip-top lid, which provides quick access to the filter media for easy cleaning and replacement. Each unit includes a foam pad and BIOMAX biological media to support beneficial bacteria growth and maintain a healthy aquarium ecosystem.

• Powerful 3-stage filtration for cleaner, healthier aquarium water
• Suitable for aquariums up to 55 litres
• New sleek and compact design
• Easy Grip Water Control Paddle for simple flow adjustment
• Redesigned filter cartridge traps more debris and waste
• Can be used as a primary filter for small aquariums or a secondary filter for larger tanks
• Horizontal positioning option for shallow tanks, low water level aquariums, or decorative waterfall effects
• Vertical positioning creates customised currents and water flow patterns
• Flip-top access lid allows fast and easy maintenance
• Includes BIOMAX biological media for effective biological filtration
• Supplied with 1 foam filter pad
• Suitable for freshwater, saltwater and reptile environments
• Made in Italy for trusted quality and performance

The FLUVAL U1 Internal Filter offers exceptional filtration efficiency, flexible installation options, and easy maintenance in one compact unit. Whether you keep tropical fish, marine species, or aquatic reptiles, this versatile filter helps maintain crystal-clear water and a healthy habitat for your aquarium inhabitants.