20Pcs 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:
20 x Bio Ball