Penn Plax Filt-a-Carb Universal Undergravel Cartridge 6 pack
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<b>[Product Information]</b><br>
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<li>3 packs of 2</li>
<li>crystal clear water.  trouble-free maintenance.</li>
<li>Activated carbon removes harmful gases and odors.  Clears up unsightly discoloration</li>
<li>Disposable cartridges fit lift tubes of Penn-Plax Multi-Pore and Undergravel "E" Filters</li>
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