Mr Aqua Medium Porous Ceramic Rings 1 L

Mr Aqua Porous Ceramic Rings provide a surface for beneficial bacteria in an aquarium filter. This listing is for 1 L of medium-size filter media.

Listed ring dimensions: 15 × 15 mm.

Use in a compatible filter-media compartment and follow preparation instructions. Rinse gently during maintenance to avoid unnecessary disruption of biological filtration.