16 aquarium filtering unit to remove amino proteins and allow exchange of carbon dioxide and oxygen; namely, a protein skimmer cup; siphons; pre-filter; plastic filtering media of various shapes like balls, spheres, cylinders, rings or hexagons which offer large surface area, void spaces, enhanced surface wetability, non-plugging capability, and non-nesting or non-interlocking characteristics; pump and pump return all sold as a unit
Trademark: 74198327
