Clay Pebbles 50L Bag (8-20mm)

Clay pebbles are a popular hydroponic medium around the world. Manufactured in Italy - they are derived from a renewable and plenitful source (clay); it is considered an ecologically sustainable medium. The clay is formed into pellets and then fired in rotary kilns at 1200°C. This causes the clay to expand inside (like popcorn) and to become porous - high surface area for colonisation by beneficial bacteria. FishPlant Clay Pebbles are light in weight, ..

£19.95