CNZ® 50pcs Black Aquarium Fish Tank Filter Bio-balls Filtration Media, 1-inch
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<b>[Product Information]</b><br>
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<li>Free media bag for easy handling</li>
<li>BIO-Balls do not require replacement unless damaged or destroyed</li>
<li>bio-sponge inside provide more surface area for growth of beneficial Bio-Spira bacteria</li>
<li>In the event of excessive buildup, you may gently rinse with water from an established aquarium, if desired</li>
<li>Diameter of bio ball: 26mm (1inch), Package includes: 2x 50pcs bioball</li>
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