Lucky Reptile Sphagnum Moss Brick 100g SM-100 comes from controlled cultivation and is from highest quality. It is shipped dried and pressed to a brick which allows for long-term storage. If water is added this moss brick will swell up to about 5 litres of fresh and moist sphagnum moss. This moss is excellent for providing humid places inside the terrarium (e.g. hiding boxes for snakes) and it increases the overall humidity inside the terrarium. Excellent for tropical terrariums and most amphibians, for use with the Multi Box or as a subsoil for orchids and other plants.