Penn Plax Cascade 300 Internal Bio Sponge Filters (3 Pack)

Penn Plax Cascade 300 Power Filter Replacement Bio-Sponge 2-Pack

Replacement Bio-Sponge 2-Pack (CPF510) for the Penn-Plax Cascade 300 Power Filter.

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Replacement Bio-Sponge 2-Pack (CPF510) for the Penn-Plax Cascade 300 Power Filter.

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