Fluval FX6 External Filter

6 reviews

Building on the hugely successful FX5, the FX6 is Fluval's next generation filter workhorse, with all the power and reliability that Fluval FX filters are known for, plus more.


  • FX6 External Filter
    code: A219 In Stock (Only 9 left!)

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Product Information

The Fluval FX6 External Filter is a large capacity, multi-stage external canister filter system suitable for aquariums to 1500 Litres.

With outstanding features designed to make aquarium fishkeeping easier and more convenient than ever, FX6 includes a self-priming system with a super capacity canister filter which processes and circulates 2130 litres (563 US gallons) of water every hour it has an astounding media capacity that produces cleaner and healthier results.

Filtering material can easily be placed in a removable stack of media baskets which is at the heart of Fluval's multistage filtration. The baskets are precision-engineered to eliminate water by-pass, making filtration more efficient. Only foam filter blocks are included, any additional media can be bought at a great price from Swell UK.

The baskets can hold a total of 5.9 litres of media and can be stacked in the precise combination of layers that will work best for your aquarium. Each one is lined with a foam insert for effective mechanical pre-filtering. Instant-release T-handles let you lift and separate the baskets quickly and easily, making routine maintenance simpler.

Fluval FX6 also features Smart Pump Technology, which provides optimal filter performance. This advanced technological feature employs an electronic circuit board that continually monitors the pump. Impeller speed and force are constantly measured to ensure powerful output and energy efficiency. It also manages the filter's self-starting feature and evacuates air that may enter or build up within the filtration system. On a 12-hour cycle, the pump will pause and allow trapped air to escape, ensuring the best filtration efficiency at all times.

Keep your FX6 in perfect working order with replacement foam, bio foam, carbon foam, water polishing pads and pre-filter media.

Guarantee Aquarium Capacity Pump Output Mechanical Area (Foam) Biological Volume Filtration Volume Filter Circulation Max Head Height Wattage Dimensions
3 Years Limited 1,500 ltrs 3,500 lph 2,100cm² 5.9 ltrs 20 ltrs 2,130 lph 3.3m 43w L:40cm x W:40cm x H:53cm
  • Download full spec manual here.


  • Smart Pump technology ensures optimum flow
  • Self Priming (plug & start)
  • Automatic water change function
  • Large, clog-proof strainer
  • Set up & maintenance guide on DVD
  • Media Supplied - 6 foam filter blocks
  • Ceramic Bio media, Pre filter foam and Carbon filter foam also included
  • Advanced motor technology provides better performance and reliability while consuming 10% less electricity
  • Click-Fit AquaStop Valves
  • Self-starting filter-just add water and plug in-Smart Pump Technology will do the rest
  • Monthly maintenance indicator
  • Heavy-duty Anti-Clog Telescopic Strainer
  • Multi-Directional Output Nozzles
  • Purge Valve with Drain Hose
  • Water change feature eliminates need to carry buckets of water-simply attach appropriate hose to the output-Smart Pump Technology will do the rest (Kit sold separately)

Latest Customer Reviews

  • Rating
    Date 30/11/2020 08:11am
    Fluval FX6 External Filter
    Feefo Logo
    Its fantastic. My tank has never looked so clean really pleased
  • Rating
    Date 14/08/2020 06:08am
    Fluval FX6 External Filter
    Feefo Logo
    A super filter, once set up water very clear quickly. Easy to install and very quiet once running
  • Rating
    Date 15/05/2018 15:05pm
    Fluval FX6 External Filter
    Feefo Logo
    Use in a tank with two turtles who are not the cleanest animals. Water went crystal clear in approx 20 minutes after setting up. Very difficult to set up and I have yet to try and clean the filter media, but overall very good. It does frighten the life out of my turtles when it purges all the air out twice a day thought!!
  • Rating
    Date 15/03/2017 13:03pm
    Fluval FX6 External Filter
    Feefo Logo
    Outstanding filter. Just conditioning it on my smaller aquarium before installing it on my larger one.
  • Rating
    Date 23/08/2016 11:08am
    Fluval FX6 External Filter
    Feefo Logo
    FX6 is an amazing bit of kit and free gravel cleaner which I have already after filing out on line claim form with Fluval
  • Rating
    Date 14/11/2014 16:11pm
    Fluval FX6 External Filter
    Feefo Logo
    If Carslberg made aquarium filters they would make the Fluval FX6.