Euro Pebbles is an inert, hydrological substrate of high quality. Pure and salt-free clays are used as the base material and are baked in an open oven, creating a characteristic, unstructured shape. Euro Pebbles is versatile because the nutritional value can be determined by yourself. This substrate is suitable for various cultivation methods, but especially for circulating systems. Euro Pebbles has been flushed. Euro Pebbles gives the highest yield in combination with Plagron Hydro A& and the Plagron additives.