Fluval® U Series Underwater Filters provide complete and efficient 3-stage filtration, including BIOMAX biological filtering (U2, U3 and U4 models), to create superior aquarium water quality. They provide the option of setting the flow output in 3 different positions, a key benchmark in underwater filtration. The Adjustable 3-Way Flow Control feature (U2, U3 and U4 models) lets you position the water flow output to meet your specific needs. The Top Output setting provides maximum circulation and oxygenation, the Integrated Spray Bar setting provides a gentle, even flow for planted aquariums, and the Bottom Output setting is for deep water agitation.
Fluval® U Filters also include a convenient flip-top lid that allows quick and easy access to the filter cartridge for maintenance or replacement including Fluval’s Clean & Clear cartridge (HA499). Packed with special high performance resins, Clean & Clear is proven to reduce phosphate and nitrate while preventing the spread of algae, providing you with a cleaner, clearer aquarium and healthier fish for longer intervals.
In addition, Fluval® U Filters offer installation versatility: they can be installed vertically against the aquarium wall to create currents or customized flow patterns; or they can be placed horizontally in shallow water tanks or to create decorative features such as waterfalls. Offering outstanding 3-stage filtration, increased water movement and vital aeration, Fluval U-Series internal filters are the perfect solution where external filtration is not possible.
- U1 for up to 55 litres – 250 litres per hour
- U2 for 45-110 litres – 400 litres per hour
- U3 for 90-150 litres – 800 litres per hour
- U4 for 130-240 litres – 1000 litres per hour