Description
What in Package: you will get 500 pieces of bio balls and 5 pieces of black mesh bag with zipper, sufficient quantity and good combination to meet your use and replacement needs in many occasions; The black bio balls filter media can be applied separately or in a mesh bag Biochemical Cotton Design and Easy to Use: each bio ball includes biochemical cotton as a filter medium, which is more effective than ordinary filter materials, and can improve the filtering effect; It is simple and convenient
