External Canister Filters

Our collection of External Canister Filters is sure to have just the right product you’re looking for, whether it’s for your fish tank, aquarium, or pond. We stock adjustable external canister filters, UV & Flow control external canister filters and plenty more. You can enjoy free UK shipping with no minimum order quantity, as well as same-day despatch on orders placed before 4pm. Browse our range of external canister filters below.

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  1. Sunsun 4600l/h External Canister Filter Fish Tank Aquarium with UV + Flow Control

    The SunSun HW-5000 is one of the newest canister filters from SunSun that is easy to set up and simple to use. It offers a very high flow rate of 4600 litres per hour for just 40w of power consumption thanks to the removable DC pump with SINE wave technology which is more energy efficient than regular canister pumps.

    This model includes a detachable smart digital controller which allows users to adjust the water flow rate and UV sterilizer's "ON" time. The HW-5000 has a controllable built-in 9W UV steriliser, which is perfect for keeping algae away from your aquarium.

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  2. External Filter Booster - Add-On Filter (2 Sizes)

    Our external filter boosters are designed to be used alongside an existing external canister filter to quickly and easily increase your filtration volume. These filter canisters do not have a pump, so they are connected into the water exit line on your existing canister filter and pumped through this booster unit.

    These filter boosters are available in two different sizes. The small one holds 1.2 litres, and the large one 2.3 litres. They also have different pipe diameter connections.

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    As low as £17.99
  3. Boyu Adjustable Flow External Canister Filter 300-1610 L/H Optional UVC

    The Boyu DGN Series range of external canister filters are an extremely robust and feature rich filter suitable for aquariums up to 500 litres in size. As the newest filter range from this manufacturer, these filters have a very low power draw, but with very high performance.

    These filters have an easy adjust touch panel to adjust the output flow rate of the filter. The minimum flow rate is 300 litres per hour, and the maximum flow rate is 1610 litres per hour. These filters are also self-priming and do not require manual priming which can be difficult with other filters.

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    As low as £79.99
  4. Sunsun 3000l/h External Canister Filter Fish Tank Aquarium with UV + Flow Control
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    100 % of 100
    Newest canister from SunSun that is easy and simple to use. The HW-3000 features an LCD display that will surely enhance any user's experience with the canister. With an LCD display, users can adjust the flow of the pump. The HW-3000 also has a controllable built-in 9W UV steriliser, which is perfect for keeping algae away from your aquarium. Learn More
  5. 1400l/h Aquarium Fish Tank External Canister Filter with Media

    The Finest Filters new and improved range of external canister filters can easily be connected to aquariums up to 1000 litres in size (depending on model), and are suitable for all water types, including coldwater, tropical freshwater and saltwater (marine) aquariums.

    This filter is the 1400l/h model without UV steriliser

    Suitable for aquariums up to 600 litres in size

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  6. 2000l/h Aquarium Fish Tank External Canister Filter with Media
    Rating:
    97 % of 100

    The Finest Filters new and improved range of external canister filters can easily be connected to aquariums up to 1000 litres in size (depending on model), and are suitable for all water types, including coldwater, tropical freshwater and saltwater (marine) aquariums.

    This filter is the 2000l/h model without UV steriliser

    Suitable for aquariums up to 1000 litres in size

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  7. 2000l/h Aquarium Fish Tank External Canister Filter with UV Steriliser
    Rating:
    100 % of 100

    The Finest Filters new and improved range of external canister filters can easily be connected to aquariums up to 1000 litres in size (depending on model), and are suitable for all water types, including coldwater, tropical freshwater and saltwater (marine) aquariums.

    This filter is the 2000l/h model with UV steriliser

    Suitable for aquariums up to 1000 litres in size

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