Lyla 7 in 1 Fish Tank Water Filter Stone Multi-function Filter Stone Purify Water Aquarium Tool

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