Cobalt International ACI50004 Ceramic Hex Rings Filter Media for Aquarium, Small
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<b>[Product Information]</b><br>
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<li>Cobalt Ceramic Hex Rings Filter Media Small</li>
<li>Cobalt Micro Ceramic Rings are ideal for boosting biological filtration in any filtration systems</li>
<li>The rings are extremely porous, providing tremendous surface area for nitrifying bacteria to thrive</li>
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