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External Aquarium Filters

Filtration of your pet fish tank is of the utmost importance to ensure that a healthy fresh living environment is provided for your fish. Fish tank filters specifically filter external are ideally designed for such a purpose.

Search External Aquarium Filters


Fluval External Filter

This Fluval 206 External Canister Filter is easily maintained and is suitable for fresh and salt water aquariums up to 200 litres.

FREE Standard UK Delivery!
From £79.99
Products in this Group

Nexx Extension Aquarium Filter

The API Nexx Extension Aquarium Filter adds 200 litres filtration capacity to the API Nexx Filter while using the same pump. You simply add it to your existing Nexx filter through a clip connect. You can also add further extension modules if you increase your tank size or add more fish.
  • Superior filtration with no by-pass
  • A unique blend of ion-exchange resins, organic scavenger resins, and high-porosity activated carbon
  • Superior removal of organic aquarium pollutants, including colours, odours, heavy metals and toxic gases
  • Removes compounds that carbon alone cannot remove
  • 2 year guarantee
With each extension module for your API Nexx Filter, you will receive:
1 x module
6 x screws
1 x connection stabilising plate
2 x plumbing connectors
2 x cartridge caddies
2 x cartridges
1 x memo card

Capacity: 200 litres filtration
Please note: this is for one module only

Click here for Nexx Filter Instructions.
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BUY NOW: £19.99

Nexx Pre-Filtration Foam

This API Nexx Pre-Filtration Foam is designed to fit the API Nexx Aquarium Filter and Filter Extension and mechanically filtrate to produce crystal clear water. It is the ideal thickness to prevent not only finer debris but also other media such as fry, dead fish and plant material from clogging the aquarium filter intake by distributing the suction evenly along the length of the foam. It even maintains the biological filtration when the main filter is changed or cleaned and traps large waste particles.

Perfect for freshwater, saltwater and reef aquariums as it removes organic aquarium pollutants and impurities for improved growth of corals in saltwater and plants in freshwater aquariums.

  • Fits API Nexx Filter and Filter Extension only
  • 30 ppi
  • Each cartridge lasts for 2 months

    Size: 4
    Quantity: Pack of 2

    BUY NOW: £3.99

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