Product details:

Experience a unique hang-on-the-back water polishing unit that makes maintenance quick and easy, simply replace the cartridge Includes quick disconnect valves, pump locking heads, water intake/output connections, hoses, water polishing unit with cartridge and media activated carbon, coarse foam, bio-balls, bio-ceramic rings. Multiple water return options for optimal versatility to best suite a variety of aquarium habitats; spray bar, water director and water polishing unit. Multi-stage filtration that includes biological, chemical and mechanical Fits up to 75 gallon aquariums