Fluval FX6 External Filter – Fully Serviced – Excellent Condition £220 (add your price) One of the best external filters on the market. This Fluval FX6 is in excellent condition and has been fully serviced, thoroughly cleaned and tested, so it's ready to install and use. Fully stripped, cleaned and serviced Impeller and seals inspected Clean filter media included Powerful, quiet and reliable Suitable for freshwater and marine aquariums Ideal for aquariums up to 1,500 litres If you're looking for a high-performance filter for a large aquarium, the FX6 is hard to beat. New ones cost hundreds of pounds, so this represents excellent value. Collection preferred. You're welcome to see it running if arranged in advance. If the advert is still up, it's still available