<br>100 Pcs 16MM Aquarium Bio Balls Filter Media Wet Dry Koi Fish Tank Pond<br>Features:<br> Material: PVC<br>Diameter of bio ball: 16mm<br> Practical and durable home using product<br>The bio balls provide biological filtration, removing toxic ammonia and nitrite.<br> BIO-Balls do not require replacement unless damaged or destroyed<br>Each filter media is pre-packed in its own mesh media bag.<br>Can be reused over and over again until it breaks<br>Great for fresh or saltwater aquarium filtration systems.<br> In the event of excessive buildup, you may gently rinse with water from an established aquarium, if desired<br>The bio-sponge inside provide more surface area for growth of beneficial Bio-Spira bacteria<br> Please allow 1-3cm differences due to manual measurement<br>The real color may be slightly different from the photo, due to a variety of factors such as computer screen contrast or light.<br>Package inculded:<br>1 Pack of<br> Bio Balls(100*Bio Balls)<br>