External Fish Tank & Aquarium Canister Filters

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    Aquarium External Filters from AllPondSolutions

    External fish tank filters, or canister filters, are an ideal solution for customers maintaining a large aquarium where a strong water current and high level of filtration is necessary. With a larger capacity to include supplementary media such as carbon, external filters also contain a greater amount of sponge and biological media, enhancing the level of mechanical filtration and breakdown of ammonia.

    Fitted beneath the aquarium itself, canister filters are also advantageous as they provide easy access for maintenance without disturbing your livestock. We offer an extensive range of our own brand external filters.

    Buying guide

    When choosing between models, match the filter's rated flow to your tank's actual volume rather than just its footprint — a lightly stocked tank can cope with a gentler turnover, while a heavily stocked or larger aquarium needs a filter capable of turning over several times the tank volume per hour. If you're unsure how much water you're really working with, our fish tank volume calculator makes it easy to work out what you need before you buy. It's also worth checking how many media baskets a canister holds, as more stages let you run mechanical sponges alongside biological media for genuinely cleaner, clearer water without constant tinkering. Once set up, most canister filters need only occasional rinsing, leaving you free to simply enjoy watching your fish rather than maintaining them.

    20 products

    1,000 L/H Aquarium Fish Tank External Canister Filter - 1000EF
    1,000 L/H Aquarium Fish Tank External Canister Filter - 1000EF
    £64.99
    400 L/H Aquarium Fish Tank External Canister Filter - EF-150
    400 L/H Aquarium Fish Tank External Canister Filter - EF-150
    £37.99
    1,000 L/H Aquarium Fish Tank External Canister Filter with 9W UV Steriliser - 1000EF+
    1,000 L/H Aquarium Fish Tank External Canister Filter with 9W UV Steriliser - 1000EF+
    £74.98
    2.3L EF External Filter Booster Canister - EF-2-BOOSTER
    2.3L EF External Filter Booster Canister - EF-2-BOOSTER
    £19.99
    2,000 L/H Aquarium Fish Tank External Canister Filter with 9W UV Steriliser - EFX+
    2,000 L/H Aquarium Fish Tank External Canister Filter with 9W UV Steriliser - EFX+
    £109.99
    800 L/H Aquarium Fish Tank External Canister Filter - EF-250
    800 L/H Aquarium Fish Tank External Canister Filter - EF-250
    £44.99
    2,000 L/H Aquarium Fish Tank External Canister Filter with 9W UV Steriliser - 2000EF+
    2,000 L/H Aquarium Fish Tank External Canister Filter with 9W UV Steriliser - 2000EF+
    £99.99
    1,000 L/H Aquarium Fish Tank External Canister Filter with 9W UV Steriliser - EF1+
    1,000 L/H Aquarium Fish Tank External Canister Filter with 9W UV Steriliser - EF1+
    £84.99
    2,000 L/H Aquarium Fish Tank External Canister Filter - 2000EF
    2,000 L/H Aquarium Fish Tank External Canister Filter - 2000EF
    £89.99
    1,400 L/H Aquarium Fish Tank External Canister Filter with 9W UV Steriliser - EF2+ Save £5
    1,400 L/H Aquarium Fish Tank External Canister Filter with 9W UV Steriliser - EF2+
    £89.99£94.99
    1.2L EF External Filter Booster Canister EF-BOOSTER
    1.2L EF External Filter Booster Canister EF-BOOSTER
    £16.99
    1,400 L/H Aquarium Fish Tank External Canister Filter - 1400EF
    1,400 L/H Aquarium Fish Tank External Canister Filter - 1400EF
    £74.99
    1,400 L/H Aquarium Fish Tank External Canister Filter with 9W UV Steriliser - 1400EF+
    1,400 L/H Aquarium Fish Tank External Canister Filter with 9W UV Steriliser - 1400EF+
    £84.99
    1,000 L/H Aquarium Fish Tank External Canister Filter - EF1 Save £5
    1,000 L/H Aquarium Fish Tank External Canister Filter - EF1
    £69.99£74.99
    1,400 L/H Aquarium Fish Tank External Canister Filter - EF2 Save £5
    1,400 L/H Aquarium Fish Tank External Canister Filter - EF2
    £79.99£84.99
    1400 L/H Aquarium Fish Tank External Filter 1400EF with EF Booster Unit
    1400 L/H Aquarium Fish Tank External Filter 1400EF with EF Booster Unit
    £84.99
    Aquarium Hang On Filter with Surface Skimmer – 300 to 500 L/H
    2 models
    Aquarium Hang On Filter with Surface Skimmer – 300 to 500 L/H
    from £28.99
    500 L/H Hang On Aquarium Fish Tank External Filter - HOB-500 Sold out
    500 L/H Hang On Aquarium Fish Tank External Filter - HOB-500
    £29.99
    2,000 L/H Aquarium Fish Tank External Canister Filter - EFX Sold out
    2,000 L/H Aquarium Fish Tank External Canister Filter - EFX
    £99.99
    Aquarium Hang On Filter 500 L/H - External Fish Tank Filter for 35-60cm Aquariums | HOF-500 Sold out
    Aquarium Hang On Filter 500 L/H - External Fish Tank Filter for 35-60cm Aquariums | HOF-500
    £32.99

    Choosing the Right External Fish Tank Filter

    The external fish tank filters that you see here filter large volumes of water through a system with several stages, to make sure that your aquarium is healthy. Powerful but low maintenance, our collection of external canister filters can be used with any filtration media that you choose. The filter returns water back to the tank by spray bar, which not only reduces evaporation and current, also makes sure that the water is well aerated. Our collection at AllPondSolutions offer a size filter for any size aquarium.

    Why Buy your Aquarium External Canister Filter from AllPondSolutions

    We are the experts when it comes to aquariums and ponds, so if you have any questions about the products you see here, or any of the others that are on the website, then please don’t hesitate to get in contact. Call us on 01895 813 000 and order your external aquarium filter today.