[DETAIL]<br>50/100Pcs Aquarium Pond Bio Balls 16mm Fish Tank Filter Media Marine Sum(16mm) Water Quality Stabilizer<br>Description:<br>100% Brand New, High Quality.<br>The bio-sponge inside provide more surface area for growth of beneficial Bio-Spira bacteria<br>BIO-Balls do not require replacement unless damaged or destroyed<br>In the event of excessive buildup, you may gently rinse with water from an established aquarium, if desired<br>Specification:<br>Diameter of bio ball: 16mm<br>Note:<br>There may be 1-3mm of size deviation due to manual measurement.<br>There may be a little color difference due to display pixel and light.<br>Package Included:<br>50/100 x Bio Ball<br><br>[ATTRIBUTES]<br>- High-concerned chemical: None<br>- Water Treatment Type: Solid<br>- Function: Water Quality Stabilizer,Plants Fertilizer,water purifier,Bactericide<br>- High-concerned chemical: None<br>- Water Treatment Type: Solid<br>- Function: Water Quality Stabilizer,Plants Fertilizer,water purifier,Bactericide<br>- Model Number: PHG3225<br>- Origin: Mainland China