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 Clay
Pebbles are derived clay formed into pellets and then fired in rotary
kilns at 1200°C. This causes the clay to
expand inside and become porous.
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 pellets drain
freely and do not hold excessive water, they provide good oxygen levels
around the root zone and are particularly suitable for flood and drain
systems. They are also used extensively for rose and orchid growing.
In drip irrigation systems, the pellets can be mixed with a medium with
better capillary action, so the feed is dissipated broadly through, to
prevent salt build-up.
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