Aquarium Filter Media Ball Aquarium Bio Ball for Aquarium Filter 20PCS<br> The bio balls is suitable for fresh water and sea water tank. Great help to restore the natural water quality, and provide the most suitable living environment for your fishes. This product can be used in a variety of filters, pls place in the appropriate position of the filter.<br> Features:<br> The bio balls are fired by high temperature.<br> Full of rich variety of natural elements and essential minerals and trace elements.<br> Encourages growth of biological colonies and holds large amounts of good bacteria. Great help to restore the natural water quality, and provide the most suitable living environment for your fishes.<br> Suitable for fresh water and sea water tank.<br> Reduces ammonia and nitrate levels.<br> Any problem, please contact our store without hesitation. Honor to serve you!<br> Specification:<br> Name: Aquarium filter media ball<br> Color: Yellow<br> Material: Quartz<br> Diameter of ball: 21mm<br> Package Information:<br> Package size: 14 * 10 * 3cm / 5.51 * 3.94 * 1.18in<br> Package weight: 85g<br> Plastic Packaging<br> Package List:<br> 20* Aquarium filter media ball<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store