The original Hydroton brand expanded clay is a unique, lightweight expanded clay aggregate made in Germany
This natural clay is mined, formed into pellets, then kiln fired at high temperatures to cause the clay to expand into tough, lightweight balls
Clay naturally has balanced capillary action, with an ideal surface structure
Hydroton brand expanded clay is semi-porous and generally does not float like other products can
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. Size Specification is 8-16 mm
