Are you looking for a professional and safe Aquarium Filter Ball? Are you in search of a reliable cleaning tool that has the good cleaning effect? , ! Our aquarium filter ball must meet your needs. Although the design is simple, it is very practical to use. It is one of the for you. With multiple PVC structure rack, large surface area for the growth of nitrifying . Features -Color:Black -Material:PVC, Cotton - Size: 2.60X2.60X2.60cm/1.02X1.02X1.02in -It is suitable for personal household fish tanks or store fish tanks, and the method of use is simple. -It is not easy to deform, which brings you a lot of convenience. Reasonable design, easy to add the filter cotton and maintenance easier. -Fish Tank Filter Ball is made of PVC which can to use for fish. -This aquarium filter your fish tank or aquarium look cleaner and fresher. -It can be given to your close friends or family who want to keep pet fish as a present. Package list: Aquarium Filter Balls