CNZ Pond and Aquarium Filter Media Pad Coarse
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<b>[Product Information]</b><br>
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<li>Graduated density design allows for better filtration and improved flow</li>
<li>Works well in all environments / completely non-toxic</li>
<li>Perfect for use in biological filters, settling tanks, and pump pre-filters</li>
<li>Approximately 1" thick</li>
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