50/100Pcs Home Aquarium Pond Bio Balls 16mm Fish Tank Filter Media Marine Sum Water Treatment Quality Stabilizer Pet Products

50/100Pcs Aquarium Pond Bio Balls 16mm Fish Tank Filter Media Marine Sum(16mm) Water Quality Stabilizer Description: 100% Brand New, High Quality. The bio-sponge inside provide more surface area for growth of beneficial Bio-Spira bacteria BIO-Balls do not require replacement unless damaged or destroyed In the event of excessive buildup, you may gently rinse with water from an established aquarium, if desired Specification: Diameter of bio ball: 16mm Note: There may be 1-3mm of size deviation due to manual measurement. There may be a little color difference due to display pixel and light. Package Included: 50/100 x Bio Ball