Fluval FX4 External Filter

Fluval FX4 External Filter

The Fluval FX4 External Filter is a high-performance canister filter designed for powerful multi-stage filtration in large freshwater and marine aquariums. Equipped with Smart Pump™ technology and a self-starting system, it delivers strong water circulation, efficient filtration, and convenient maintenance for demanding aquarium setups.

Key Features

• Multi-stage filtration with pump output of approx. 2650 L/h (700 US gal/h)
• Smart Pump™ microchip technology monitors and optimises performance
• Self-starting system with automatic air evacuation every 12 hours
• Stackable media baskets prevent water bypass (approx. 3.9 L media capacity)
• All filter media included – mechanical, biological and chemical
• Aqua-Stop valves with leak-proof Click-Fit attachment system
• 45° valve positioning for easier installation and rotation
• Anti-clog telescopic intake strainer for consistent water flow
• Multi-directional output nozzles for customised circulation
• Utility valve with drain hose for easier maintenance
• Rubberised feet for quieter operation
• Compact 16.5″ tall design fits most aquarium cabinets
• Made in Italy
• Suitable for freshwater and saltwater aquariums

Benefits

• Provides powerful filtration for large aquariums
• Maintains clear, healthy water conditions
• Convenient water change capability (kit sold separately)
• Quiet, stable performance for home or professional use
• Flexible flow control for different aquarium setups

What’s Included

• Filter canister with pump unit and power cord
• Ribbed hosing
• Rim connectors, clips, and suction cups
• Intake stem and output nozzle
• Lid fasteners and filter lid
• Utility valve with hosing and drain cap
• Rubber feet
• Media baskets and half media baskets
• Accessories and fittings