Description: 7 Kinds filter stones in different function, more effective in purifying water Increase the oxygen content in the water and absorb the impurities in the water Filter stone easy to clean and various types of installations are possible This filter stone set can degerm, absorb impurities, adjusting PH, Anti-radiation etc. help to break down harmful waste Non-toxic, suit for various type of fish Specification: Material: glass, ceramic, quartz, activated carbon and other non-toxic material Weight: 500g/17.63oz Filter stone type: medical stone, bio ball, big ceramic ring, small ceramic ring, hexagon ceramic ring, anti infrared stone, nitrifying bacteria culture ring Package Includes: 1 Set Filter Stone(Weight 500g)
