Penn Plax Cascade 170 GPH Internal Filter Aquarium Bio Sponge Replacement; 2 Pack
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<b>[Product Information]</b><br>
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<li>Keep your water clean and clear with the replacement bio sponge for use in the Cascade 170 GPH Model CIF4 Internal Filter.</li>
<li>The bio sponge filter removes ammonia and nitrites from your aquarium tank keeping your aquarium clean; healthy; and odor free.</li>
<li>Filter sponge optimizes the colonization of beneficial aerobic bacteria which prevents the water from becoming cloudy and harming fish.</li>
<li>Perfectly cut to fit into the Cascade 170 Internal Filter tray without any gaps which could allow pollutants to re-enter the water.</li>
<li>Genuine Penn Plax replacement cartridge for Cascade 170 GPH model CIF4. When used together; the filter and bio sponge provide maximum protection against water pollutants.</li>
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