Saim Black Media Bio Balls Filter Strainer for Fish Tank Aquarium Pond
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<b>[Product Information]</b><br>
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<li>1.81"/46mm Ball in diameter</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>Good to use in both fresh & saltwater tank; offers mechanical and biological filtration with inside sponge.</li>
<li>100Pcs bio balls</li>
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