20Pcs Aquarium Pond Bio Balls 16/26/36mm Fish Tank Filter Media Marine Sum(16mm)

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: 20 x Bio Ball