500g Biological Filter Media Probiotic Healthy Purify Water Fish Tank Filter Ring for Aquariums Fish Tanks

1、Active Cavity Structure: Bio media has light specific gravity, large surface area, high oxygen permeability, high water permeability and other characteristics. 2、Special Water Molecular Structure: It can quickly catch suspended particles, strengthen biodegradation, and facilitate the easy shedding of biofilms. 3、Safe: Fish tank filter ring provides efficient biological filtration and maintains a healthy aquatic environment without compromising water quality. 4、Beneficial to Biological Colon