Derived from a renewable and plentiful source (clay), Hydroton is considered an ecologically sustainable growing medium. The clay is formed into pellets and fired in rotary kilns at 1200°C. This causes the clay to expand, like popcorn, and become porous. Hydroton is manufactured specifically for hydroponic cultivation. It holds water extremely well and transmits it effectively to the plant roots. Hydroton is pH stabilized and releases practically no minerals into the nutrient stream; in other words Hydroton is almost completely inert – except for offering excellent moisture and oxygen capacity to stimulate healthy root development. Hydroton can also be cleaned and reused over and over, so you can help keep your costs down compared to other growing mediums such as soil or rockwool.
Also read artical that stated that hydroton is widely used for biofiltration in ponds and aquariaiums.
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12-17-2011, 07:25 PM
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