The Eheim Liberty hang-on power filter line is affordable, complete filtration for aquariums up to 50 US gallons. Eheim Liberty filters are safety-engineered and conform to American and Canadian safety standards. They are easy to set up, simple to operate and come in three models.  Eheim Liberty filters provide superior filtration as a result specially developed cartridge technology. The advanced 3D technology is based on a disposable pleated carbonized cartridge which provide 100% more mechanical and chemical filtration. It traps minute dirt particles while absorbing liquid impurities, organic compounds and odors. Eliminating toxins on contact, the bio-foam cartridge completes the 3-stage filtration. To ensure long-term biological filtration, cartridges can be changed individually in order to maintain beneficial bacteria colonization. Liberty 2040 (100gph for aquariums up to 20 US gallons), Liberty 2041 (150gph for aquariums up to 35 US gallons), and Liberty 2042 (200gph for aquariums up to 50 US gallons).

Replacement Parts: Liberty 3D Carbonized Cartridges & Bio Foam Cartridges.