Hydroton Original Clay Pebbles - 10 Liter | Lightweight Expanded Clay Aggregate Made in Germany

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