Hagen Fluval FX4 External Canister Filter


The Fluval FX series stands for high-performance and reliability. Made in Italy, the FX4 canister filter is a compact counterpart of the FX6. FX4 is suitable for those upgrading from Fluval 406. Fluval FX4 is recommended for both freshwater and saltwater aquariums up to 1000 L (250 US Gal).


  • Multi-stage filter pump
  • Superior flow rate : 2650 L (700 US Gal) per hour
  • Built-in smart chip technology that ensures the pump self-monitors and self-optimizes its own performance
  • Self-starting : just add water, power on, and the Smart Pump™ will take over. Trapped air is automatically evacuated every 12 hours to ensure maximum efficiency

Easy to Use & Maintain

  • To change water, simply attach hosing to output and the Smart Pump™ will do the rest. Not required to tilt or lift the FX4.
  • Removable, stackable media baskets eliminate water bypass and hold a total of 3.9 L (1 US Gal) of media
  • All filter media included - mechanical, chemical and biological
  • Aqua-Stop valves with leak-proof Click-Fit attachment system
  • Valves positioned at convenient 45-degree angle for easy installation and rotation
  • Anti-clog, telescopic strainer ensures continuous water flow
  • Multi-directional output nozzles can be fully adjusted to create customized water flows
  • Utility Valve with drain hose for easy maintenance and flushing of canister


  • Rubberized feet help ensure quiet operation
  • Compact 41.9 cm (16.5 in) tall design - easily fits under most aquariums
  • Suitable for freshwater and saltwater aquariums
  • Made in Italy

Accessorices included

  • Rubber hosing
  • Rim connectors, clips and suction cups
  • Inake stem
  • Output nozzle
  • Lid fasteners
  • Filter canister
  • Utility valve and hosing
  • Drain cap
  • Pump unit (motor) and power cord
  • Rubberized feet
  • Media baskets
  • 1/2 media baskets
  • Filter lid and accessories

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