Fluval U3 Underwater Filter

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.

• Designed for aquarium up to 40 gallons
• Use as a primary filter for smaller aquariums, or supplementary filter for larger aquariums
• Position horizontally for shallow tanks, larger tanks with low water levels, or to create a decorative waterfall feature
• Position vertically against aquarium wall to create currents or customized flow patterns
• Convenient flip-top lid allows for quick and easy access to filter cartridge for maintenance or replacement
• Adjustable 3-way flow control Top Output for circulation and oxygenation, Integrated Spray Bar for a gentle even flow, and Bottom Output for deepwater agitation
• BioMax biological media included
• Made in Italy
• Ideal for freshwater, saltwater and reptile environments