Compact complete & powerful. This series Eheim Liberty External Filter of EHEIM appended filters combines the advantages of easy handling with effective water purification by mechanical biological & adsorptive means. An EHEIM development with uncomplicated technology that is equally suitable for ambitious aquatics novices & professional fish breeders. The practical filter media are of special folding material which is inserted in the cartridge form thus offering twice as much filter area. In the overflow system the water flows through all three cartridges & thus the residues & pollutants are reliably removed by coarse & fine mechanisms. The Eheim Liberty Filter is immediately ready for use & is extremely simple to install by hanging over the tank rim. Included 3D active carbon cartridges Cellular foam cartridge Special Note This device is designed for use in Germany & thus will include a power adapter for use in the UK. What´s this?