Made from volcanic rock and sintered into microporous structure. It can release negative ions that help remove harmful substances and stabilize pH. The volcanic rocks contain rich minerals and trace elements. Micro pore structure provides massive space for the growth of bacteria, helps build excellent biofilter system.
Volume: 1L, 3L, 10L
Replacement rate: 6 months
Rinse the media thoroughly with water before using to prevent cloudy.
Amount: 5% of water volume.