Clay pebbles have been a favourite hydroponic growing medium for years, and it's easy to see why. The rough, porous surface holds onto water and nutrients, while the round shape leaves plenty of air gaps for free drainage and strong root oxygenation. They're reusable too, so a single batch can last across several grows if you rinse and sterilise them between uses.
Clay pebbles work well on their own in pure hydroponic setups, or mixed with coco for a hybrid growing medium that holds a bit more moisture while keeping good drainage. If you want the airy structure of clay without going fully hydro, a coco and clay pebble blend like our Plagron Hydros Coco 60/40 gives you the best of both.
For a straightforward, reliable option, the Plagron Euro Pebbles are a solid all-rounder and one of our most popular choices for growers switching over to clay for the first time.
