sera Siporax Professional 15 mm 1, 000 ml, 10.2 oz. Aquarium Filter Accessories
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<b>[Product Information]</b><br>
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<li>Maximum optimization of biological filtration</li>
<li>Can colonise aerobic and anaerobic bacteria</li>
<li>Three-dimensional pore structure, excellent for settling of filter bacteria</li>
<li>Made in Germany</li>
<li>For all filters in freshwater and marine aquariums as well as ponds</li>
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