External Filters

Our range of external aquarium filters, carefully selected to provide efficient and reliable filtration of your fish tank, from filtration market leaders like Fluval.

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  1. Fluval FX4 External Filter + FREE 500ML Fluval Cycle Biological Enhancer

    Fluval FX4 External Filter + FREE 500ML Fluval Cycle Biological Enhancer

    Regular Price: £194.99

    Special Price £185.24

    • Comes with FREE 500ML of Fluval Cycle Biological Enhancer
    • Multi-stage filter pumps out 700 gallons (2650 L) of water per hour
    • Smart PumpTM - advanced microchip technology continuously monitors and optimizes pump performance
    • Self-starting - just add water, plug in and Smart PumpTM will take over. Trapped air auto-evacuated every 12 hours to ensure maximum efficiency
    • Easy water changes eliminate need to carry heavy buckets. Simply attach hosing to output and Smart PumpTM does the rest
    • Removable, stackable media baskets eliminate water bypass and hold a total of 1 gallon (3.9 L) 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 16.5" tall design - easily fits under most aquariums
    • Made in Italy
    • For use in freshwater and saltwater aquariums
    Learn More
  2. Fluval FX4 External Filter + Fluval Gravel Cleaner

    Fluval FX4 External Filter + Fluval Gravel Cleaner

    £214.99

    • Comes with Fluval FX Gravel Cleaner
    • Multi-stage filter pumps out 700 gallons (2650 L) of water per hour
    • Smart PumpTM - advanced microchip technology continuously monitors and optimizes pump performance
    • Self-starting - just add water, plug in and Smart PumpTM will take over. Trapped air auto-evacuated every 12 hours to ensure maximum efficiency
    • Easy water changes eliminate need to carry heavy buckets. Simply attach hosing to output and Smart PumpTM does the rest
    • Removable, stackable media baskets eliminate water bypass and hold a total of 1 gallon (3.9 L) 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 16.5" tall design - easily fits under most aquariums
    • Made in Italy
    • For use in freshwater and saltwater aquariums
    Learn More
  3. Fluval FX6 External Filter + FREE 500ML Fluval Cycle Biological Enhancer

    Fluval FX6 External Filter + FREE 500ML Fluval Cycle Biological Enhancer

    Regular Price: £239.99

    Special Price £227.99

    • Comes with FREE 500ML of Fluval Cycle Biological Enhancer
    • 3 year warranty, with extra 3 years extended warranty available
    • Multi-Stage Filtration produces healthy aquarium water
    • For fresh and saltwater aquariums
    • Features Smart Pump Technology for optimal filter performance, efficiency and management
    • Advanced motor technology provides better performance and reliability while consuming 10% less electricity
    • Click-Fit AquaStop Valves allow fast setup and leak-proof maintenance
    • Valves are positioned at 45 degree angles and rotate for easy installation
    • Self-starting filter-just add water and plug in-Smart Pump Technology will do the rest
    • Monthly maintenance indicator allows you to remember the date of your last filter maintenance/water change
    • Heavy-duty Anti-Clog Telescopic Strainer ensures continuous flow
    • Multi-Directional Output Nozzles can be adjusted to create specific water flows
    • Purge Valve with Drain Hose for easy maintenance and flushing of the canister
    • 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)
    • Flow rate: 2130 litres (563 US gallons) per hour
    • For aquariums up to 1500 litres (400 US gallons)
    Learn More
  4. Fluval FX6 External Filter + Fluval FX Gravel Cleaner

    Fluval FX6 External Filter + Fluval FX Gravel Cleaner

    £259.99

    • Comes with Fluval FX Gravel Cleaner
    • 3 year warranty, with extra 3 years extended warranty available
    • Multi-Stage Filtration produces healthy aquarium water
    • For fresh and saltwater aquariums
    • Features Smart Pump Technology for optimal filter performance, efficiency and management
    • Advanced motor technology provides better performance and reliability while consuming 10% less electricity
    • Click-Fit AquaStop Valves allow fast setup and leak-proof maintenance
    • Valves are positioned at 45 degree angles and rotate for easy installation
    • Self-starting filter-just add water and plug in-Smart Pump Technology will do the rest
    • Monthly maintenance indicator allows you to remember the date of your last filter maintenance/water change
    • Heavy-duty Anti-Clog Telescopic Strainer ensures continuous flow
    • Multi-Directional Output Nozzles can be adjusted to create specific water flows
    • Purge Valve with Drain Hose for easy maintenance and flushing of the canister
    • 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)
    • Flow rate: 2130 litres (563 US gallons) per hour
    • For aquariums up to 1500 litres (400 US gallons)
    Learn More
  5. Oase FiltoSmart 60, 100, 200, 300 Aquarium External Filters

    Oase FiltoSmart 60, 100, 200, 300 Aquarium External Filters

    Starting at: £49.99

      Features:
    • Suitable for aquariums up to 60, 100, 200, 300 litres
    • Compact: Optimal sized External Aquarium Filters
    • Crystal clear water: Effective multi-stage mechanical and biological filtration
    • Complete: Includes media, hoses, adapter, intake/outflow tube & water diffuser
    • Adjustable: Water flow can be adjusted via inflow/outflow adapter
    • Shut Off: Automated shut off to prevent water loss when cleaning
    • Secure: Stable filter canister base, to prevent it from falling over
    • Installation: Multiple installation possibilities
    • Practical: Self-venting function for uncomplicated operation
    • On Request: FiltoSmart 100-300 can be retrofitted with Oase HeatUp heaters
    Learn More
  6. Oase FiltoSmart Thermo 100, 200, 300 Aquarium External Filters

    Oase FiltoSmart Thermo 100, 200, 300 Aquarium External Filters

    Starting at: £94.99

      Features:
    • Heater: Discreetly integrated Oase HeatUp 100w Aquarium Heater
    • Compact: Optimal sized External Aquarium Filters
    • Crystal clear water: Effective multi-stage mechanical and biological filtration
    • Complete: Includes media, hoses, adapter, intake/outflow tube & water diffuser
    • Shut Off: Automated shut off to prevent water loss when cleaning
    • Adjustable: Water flow can be adjusted via inflow/outflow adapter
    • Secure: Stable filter canister base, to prevent it from falling over
    Learn More
  7. Oase BioMaster 250 Aquarium Filter

    Oase BioMaster 250 Aquarium Filter

    £149.99

    • EasyClean pre-filter module: No more bothersome removal of the filter - the pre-filter module is simply taken out, rinsed out and reinserted
    • On request: Includes integrated HeatUp adjustable heater for BioMaster Thermo - it can also be retrofitted
    • Well regulated: Flow control on the filter or with adapter set
    • Large filter volume: The combination of mechanical and highly-effective biological filtration through Hel-X ensures healthy and clear aquarium water
    • Optimal filtration: Fine 45 ppi pre-filter foam for optimal mechanical filtration of the coarse debris and longer service life of the biological media
    • Safe: Shut-off automation and safety locking mechanism prevents undesired water escaping, e.g. when removing the pre-filter module
    • Practical: Vent button for effective water intake - for a fast and easy start up when installing and after cleaning
    Learn More
  8. Oase BioMaster 350 Aquarium Filter

    Oase BioMaster 350 Aquarium Filter

    £179.99

    • EasyClean pre-filter module: No more bothersome removal of the filter - the pre-filter module is simply taken out, rinsed out and reinserted
    • On request: Includes integrated HeatUp adjustable heater for BioMaster Thermo - it can also be retrofitted
    • Well regulated: Flow control on the filter or with adapter set
    • Large filter volume: The combination of mechanical and highly-effective biological filtration through Hel-X ensures healthy and clear aquarium water
    • Optimal filtration: Fine 45 ppi pre-filter foam for optimal mechanical filtration of the coarse debris and longer service life of the biological media
    • Safe: Shut-off automation and safety locking mechanism prevents undesired water escaping, e.g. when removing the pre-filter module
    • Practical: Vent button for effective water intake - for a fast and easy start up when installing and after cleaning
    Learn More
  9. Oase BioMaster 600 Aquarium Filter

    Oase BioMaster 600 Aquarium Filter

    £219.98

    • EasyClean pre-filter module: No more bothersome removal of the filter - the pre-filter module is simply taken out, rinsed out and reinserted
    • On request: Includes integrated HeatUp adjustable heater for BioMaster Thermo - it can also be retrofitted
    • Well regulated: Flow control on the filter or with adapter set
    • Large filter volume: The combination of mechanical and highly-effective biological filtration through Hel-X ensures healthy and clear aquarium water
    • Optimal filtration: Fine 45 ppi pre-filter foam for optimal mechanical filtration of the coarse debris and longer service life of the biological media
    • Safe: Shut-off automation and safety locking mechanism prevents undesired water escaping, e.g. when removing the pre-filter module
    • Practical: Vent button for effective water intake - for a fast and easy start up when installing and after cleaning
    Learn More
  10. Oase BioMaster Thermo 250 External Aquarium Filter

    Oase BioMaster Thermo 250 External Aquarium Filter

    £169.98

    • EasyClean pre-filter module: No more bothersome removal of the filter - the pre-filter module is simply taken out, rinsed out and reinserted
    • On request: Includes integrated HeatUp adjustable heater for BioMaster Thermo - it can also be retrofitted
    • Well regulated: Flow control on the filter or with adapter set
    • Large filter volume: The combination of mechanical and highly-effective biological filtration through Hel-X ensures healthy and clear aquarium water
    • Optimal filtration: Fine 45 ppi pre-filter foam for optimal mechanical filtration of the coarse debris and longer service life of the biological media
    • Safe: Shut-off automation and safety locking mechanism prevents undesired water escaping, e.g. when removing the pre-filter module
    • Practical: Vent button for effective water intake - for a fast and easy start up when installing and after cleaning
    Learn More

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