About This

• Keep your water clean and clear with the replacement bio sponge for use in the Cascade 500 Model CCF1UL and Cascade Elite canister filter models.
• The bio sponge filter removes ammonia and nitrites from your aquarium tank keeping your aquarium clean; healthy; and odor free.
• Perfectly cut to fit into the Cascade 500 filter tray without any gaps which could allow pollutants to re-enter the water.
• Filter sponge optimizes the colonization of beneficial which prevents the water from becoming cloudy and harming fish.
• Genuine Penn Plax replacement cartridge for Cascade 500 models. When used together; the filter and bio sponge provide maximum protection against water pollutants.