Plagron's Euro Pebbles. The high-performance substrates from Plagron that provide you with enriched products to support the growth of your crops. These expanded clay pebbles can be used as an inert substrate for hydropic crops, potting soil and coco.
With a slow, controlled release, Euro Pebbles clay pebbles can be used in a wide range of applications.
With their characteristic irregular shape due to their open kiln firing, they are made from pure, salt-free clay.
When first used, it is advisable to rinse the Euro Pebbles to remove the clay powder that has been released.