Mother Earth Hydroton Original

Mother Earth Hydroton Original Clay Pebbles Hydroton brand expanded clay is semi-porous and generally does not float like other products can. A natural clay mined, formed into pellets, then kiln fired at high temperatures to cause the clay to expand into tough, lightweight balls. This expanded clay is a unique, lightweight expanded clay aggregate made in Germany. Size for Hydroton Original is 8-16 mm. For best results: Rinse all expanded clay before use. It is reusable as long as it is thoroughly cleaned between uses. 50 liter bags feature an easy-pour spout.