Prevents injuries of the mucous membrane: fine, round-shaped natural sand is gentle on sensitive barbels. Ideal for grubbing fish, such as armoured catfish and loaches Ideal for fish, invertebrates and plants: no unwanted pollutants released into the water. Package contents: 1 bag Sansibar Snow. Grain size: 0.1-0.6 mm. Not suitable for undergravel heating cables
