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Feature

Multi-stage filter pumps out 700 US Gal (2650 L) of water per hour
Smart Pump advanced microchip technology continuously monitors and optimizes pump performance
Self-starting - just add water, plug in and Smart Pump will take over. Trapped air auto-evacuated every 12 hours to ensure maximum efficiency
Easy water changes eliminate need to lift heavy buckets. Simply attach hosing to output and Smart Pump does the rest
Removable, stackable media baskets eliminate water bypass and hold a total of 1 US Gal (3.9 L) of media
Compact 41.9 cm (16.5 in) tall design - easily fits under most aquariums
All filter media included - mechanical, chemical and biological

Description

Building on the mighty FX performance and reliability platform, the all-new FX4 high performance canister filter is a compact 'little brother' to the FX6. The FX4 bridges the gap between the Fluval 406 and the FX6 canister filter, making it an ideal choice for aquariums up to 250 US Gal (1000 L).