{"product_id":"fluval-external-filter-fx4-refurbished","title":"Fluval External Filter: FX4 Refurbished","description":"\u003cp\u003eThe Fluval FX4 External Filter is a powerful canister filter suitable for freshwater and marine aquariums up to 1,000 litres. Positioned between the Fluval 406 and the larger FX6, it delivers impressive filtration performance in a compact design. This particular unit has been used previously and is supplied with new impellers fitted for dependable operation.\u003c\/p\u003e \u003ch2\u003eKey Features\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eSuitable for aquariums up to 1,000 litres\u003c\/li\u003e \u003cli\u003eMulti-stage filtration system\u003c\/li\u003e \u003cli\u003ePumps up to 2,650 litres of water per hour\u003c\/li\u003e \u003cli\u003eSmart Pump™ technology continuously monitors and optimises performance\u003c\/li\u003e \u003cli\u003eSelf-starting operation for straightforward setup\u003c\/li\u003e \u003cli\u003eAutomatic air evacuation every 12 hours to maintain efficiency\u003c\/li\u003e \u003cli\u003eRemovable and stackable media baskets with a combined 3.9-litre media capacity\u003c\/li\u003e \u003cli\u003eIncludes mechanical, chemical and biological filter media\u003c\/li\u003e \u003cli\u003eAqua-Stop valves with leak-resistant Click-Fit attachment system\u003c\/li\u003e \u003cli\u003e45-degree valve positioning for easier installation and maintenance\u003c\/li\u003e \u003cli\u003eAnti-clog telescopic strainer for consistent water flow\u003c\/li\u003e \u003cli\u003eAdjustable multi-directional output nozzles\u003c\/li\u003e \u003cli\u003eUtility valve for simplified maintenance and canister flushing\u003c\/li\u003e \u003cli\u003eRubberised feet help reduce vibration and noise\u003c\/li\u003e \u003cli\u003eCompact design fits beneath most aquarium cabinets\u003c\/li\u003e \u003cli\u003eMade in Italy\u003c\/li\u003e \u003cli\u003eSuitable for freshwater and saltwater aquariums\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCondition\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\u003cb\u003eUsed item with signs of previous use\u003c\/b\u003e\u003c\/li\u003e \u003cli\u003e\u003cb\u003eNew impellers fitted\u003c\/b\u003e\u003c\/li\u003e \u003cli\u003e\u003cb\u003eOriginal box not included\u003c\/b\u003e\u003c\/li\u003e \u003cli\u003e\u003cb\u003eDrainage hose not included\u003c\/b\u003e\u003c\/li\u003e \u003cli\u003e\u003cb\u003eDrainage cap not included\u003c\/b\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThe Fluval FX4 remains a popular choice for larger aquariums, combining high flow rates with proven multi-stage filtration. Its intelligent pump technology, large media capacity and straightforward maintenance make it a practical solution for maintaining excellent water quality in both freshwater and marine setups.\u003c\/p\u003e","brand":"Aquacadabra","offers":[{"title":"Default Title","offer_id":57767270023551,"sku":"BIP602245","price":199.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0015\/7374\/8802\/files\/eoumc4yxvgy.png?v=1781613273","url":"https:\/\/aquacadabra.com\/products\/fluval-external-filter-fx4-refurbished","provider":"Aquacadabra","version":"1.0","type":"link"}