Aquarium ceramic bio ball filter media: It is composed of selected materials rich in minerals and trace elements, Improve water quality microcirculation, enhance metabolism, increase fish energy. Ceramic biofilter material fired at high temperature: The surface and inside of the biological medium are full of tiny holes, It provides an environment for the growth and reproduction of nitrification. A perfect nitrification system can effectively improve water quality. The perfect aquarium biological filter media: Ceramic biological media through the best biological purification of fresh water and sea water, Get the best water quality. It is an enhanced filter material with pure biological characteristics. This kind of aquarium biological filter media can be reused by cleaning within 6 years. Use range: Can be used for all biological internal filters, external filters, sewage tanks, Marine and freshwater fish tanks, ponds, tank filters and hanging filters. About use: The bio media for aquarium filter should be rinsed clean before use, and generally do not need to be cleaned after use. It can also be cleaned once every 6 months according to the use condition, (cleaning with the original tank water is sufficient). Reminder: Need to be replaced in the following situations: 1. A large amount of fragmentation after loosening 2. Using contaminated water 3. The effect is significantly reduced