Ceramic Rings in 10″ x 12″ White Net Bag

Ceramic Rings are a ceramic biological filter media for larger filters such as canister, sump, and pond filters. They have a very porous surface which gives them a greater surface area than most types of plastic media. Ceramic Rings are supplied in a net bag for easier handling and cleaning. Ceramic Ring dimensions: 12mm x 10mm. The net bag measures 10″ x 12″.