| Brand | Penn-Plax |
|---|
Check the listing for details. Penn-Plax Cascade 300 GPH Hang On Filter Aquarium Bio Sponge Replacement; 2 Pack. Condition: New. Listed at 11.79 USD. The bio sponge filter removes dirt and debri from your aquarium tank keeping your aquarium clean and clear. - Filter sponge optimizes the colonization of beneficial aerobic bacteria which prevents the water from becoming cloudy and harming fish.
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