Fluval FX4 external canister filter in excellent, fully working condition. This filter has been completely stripped, thoroughly cleaned and serviced. All filter media has been washed and cleaned, and the filter is spotless inside and out. It's ready to install and use immediately. Ideal for freshwater or marine aquariums up to 1,000 litres, the FX4 is one of the most powerful and reliable external filters available, delivering outstanding mechanical, biological and chemical filtration. Features: Excellent working order Immaculate, very clean condition All filter media included and freshly cleaned High-flow performance Suitable for aquariums up to 1,000 litres Ready to use Collection preferred.