Porous ceramic bio ring media is provided in an enclosed fine mesh media bag. This is essential for the livelihood of beneficial bacteria that maintains and contributes largely to a balanced and healthy underwater eco-system. Extra room is allotted for additional filter media to be added or for personal customization if desired. This media does not require regular maintenance compared to the coarse sponge but will eventually require a light rinse as detritus builds.
NOTE: Ultum Nature Systems 60A All-In-One Tank includes 2 filled media bags