External Filters

External canister filters are ideal for large aquariums and for coping with large tropical fish or goldfish. External filters are able to hold large amounts of filter media and provide excellent biological and mechanical filtration. Charterhouse Aquatics stock all the biggest brands of external filter and external filter media for you to buy including Eheim, Oase, Tetra, Fluval and many many more.

External canister filters are ideal for large aquariums and for coping with large tropical fish or goldfish. External filters are able to hold large amounts of filter media and provide excellent biological and mechanical filtration. Charterhouse Aquatics stock all the biggest brands of external filter and external filter media for you to buy including Eheim, Oase, Tetra, Fluval and many many more.

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Shop External Aquarium Filters for Crystal-Clear Water

Keep your aquarium water clean, healthy, and stable with our range of high-performance external filters. At Charterhouse Aquatics, we stock a wide selection of trusted brands including Eheim, Oase, Fluval, and Tetra—ideal for freshwater, planted, and tropical aquariums of all sizes.

External canister filters are a popular choice among hobbyists for their superior mechanical and biological filtration, quiet operation, and ease of maintenance. Whether you’re running a compact nano tank or a heavily stocked community setup, we have the right solution to suit your needs. From beginner-friendly filter kits to advanced models with electronic control and adjustable flow, our range covers every level of experience and tank type.

Not sure which filter is right for your aquarium? Our expert team is here to help you find the best match for your tank size, livestock, and filtration goals. We also carry a full selection of replacement media, hoses, impellers, and other essential filter accessories to keep your system running at peak performance.

Explore the full collection of external aquarium filters today and enjoy fast UK delivery and top-tier customer support with every order.