FishPlant Pebbles 40L - RRP £13.99
Clay pebbles are a popular hydroponic medium around the world. Manufactured in Belgium, they are derived from a renewable and plentiful 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.
Fishplant Clay pebbles are light in weight, do not compact and are completely reusable - they can be cleaned and sterilised after use. They are also inert, pH neutral and contain no nutrients. Because the pebbles drain freely and don't hold excessive water, they provide good oxygen levels around the root zone.