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LECA (Light Expanded Clay Aggregate).

This free-draining medium is manufactured by mixing sodium with clay and firing in a rotary kiln to burn off the sodium, forming round pellets of various sizes, each pellet having ‘honeycomb’ spaces inside. These spaces allow nutrients to be taken up by the pellet and released to the plant gradually. 

These marble sized balls of clay are unique type of soil less media. Water flows between the pebbles quickly, supplying the roots with nutrients, yet allowing the roots to stay oxygenated.

With the advantage of light weight, high permeability, high durability and excellent sound and thermal insulating properties, LECA is a good ‘all round’ aggregate for use in an a variety of applications.

Leca® is the world leader in horticultural, agricultural & hydroponic substrates.