The Cascade 300 Power Filter Cartridge is a disposable floss/carbon replacement cartridge designed to fit the Cascade 300 filter model. The cartridge comes ready to use with 4.5 ounces of premium, research-grade activated carbon.

• Precision designed to fit the Cascade 300 Filter
• Quick, easy, ready to use
• Each piece contains 4.5 ounces of research-grade activated carbon - more than any comparable size cartridge

Carbon filter cartridges provide chemical filtration for aquariums by absorbing and neutralizing compounds that can cause offensive odors, including organic waste and other contaminants.