Hydroton

Hydroton grow rocks are derived from clay and are considered an ecologically sustainable medium. It is often known by the name LECA - Lightweight Expanded Clay Aggregate . The clay is formed into pellets and fired in rotary kilns at 1200C, causing it to expand inside and become porous. Expanded clay is light in weight, will not compact, and can be cleaned & sterilized for reuse.

Hydroton is inert, pH neutral and contain no nutrients. The pellets drain freely and don't hold excessive water. They provide excellent oxygen levels around the roots. Hydroton is pH neutral and does not degrade.

For best results, rinse well before using to rid the grow media of excess dust. Sterilize in between crops by using a bleach solution.