200g Aquarium Quartz Ball Fish Tank Filter Media Hollow Particles Biological Ball Bio Filter for Aquarium Accessories

Features:

1.From Hollow Particles

2,Full of rich variety ofnatural elements and essentialminerals and trace elements

3.PH Neutral, Great help to restore the natural waterquality, and provide the most suitable living environmentfor your fishes.

4, Won't dirt water, absorb ammonia, and other toxic

substances in water.

5, Hollow design, porous and will be good for Microbialreproduction.

6, Long life time.The little holes are not easy to

be blocked.

Specification:

Material: Hollow Particles