LECA - Light Expanded Clay Aggregate Growing Medium - Leca Red 8-16mm granules

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Lightweight expanded clay aggregate (LECA) or expanded clay (exclay) is a light weight aggregate made by heating clay to around 1,200 °C (2,190 °F) in a rotary kiln. The yielding gases expand the clay by thousands of small bubbles forming during heating producing a honeycomb structure. LECA has an approximately round or potato shape due to circular movement in the kiln.

Leca® is the world leader in horticultural, agricultural & hydroponic substrates. The benefits of Leca are :

Intact Granules

  • Higher insulation (more closed pores)
  • Better drainage (bigger gaps between granules)

 Fragmented Granules

  • Better moisture retention (more open pores)
  • Better soil aeration (promotes healthy bacterias)
  • Increases root biomass (sharp edges split and induce exponential root development)

 Manufactured to relevant ISO standards, Leca® is consistent in nature:

  • pH neutral
  • stable & durable
  • anti-fungal
  • resistant to insects

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