Fluval FX6 External Canister Filter – Fully Serviced & Ready to Use Looking for one of the best external filters on the market? This Fluval FX6 has been fully stripped, thoroughly cleaned, carefully inspected, and extensively tested, and can be seen running perfectly in the videos. All filter media has been cleaned, with any worn or unsuitable media replaced where necessary, so it's ready to fit straight onto your aquarium. Suitable for aquariums up to 1,500 litres, the FX6 delivers exceptional mechanical, biological, and chemical filtration while remaining powerful, reliable, and energy efficient. Complete with hoses and accessories as shown. Buy with confidence—this is a clean, fully serviced filter that's ready to provide years of dependable performance. Collection SO53