Characteristic：

Macromolecule biodegradable fitler medium is scientifically designed with flexible PP material.It has simple structure,transparent and balanced,won't blok water flow.Due to the small volume,thin wall and large surface area,it can generate more nitrobacteria,and promote the metabolism of nitrobacteria with the right filtering equipment,thus generating more and more nitrobacteria,as well as keeping the water quality in good condiion.