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Features and benefits

  • New sleek design
  • New easy grip water control paddle
  • New redesigned media cartridge – Traps more debris
  • Designed for aquariums up to 240 L (65 US Gal)
  • 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


Ideal for fresh or saltwater aquariums

Suitable for aquariums from 130-240 L (34-65 US Gal)

Wattage: 120V/60HZ – 12 W AND 230-240V/50HZ – 10 W

Output: 1000 L (260 US GAL)

Dimensions (L x W x H): 11 X 10 X 33 CM (4.5 X 4 X 13 IN)

Fluval U4