Leca Clay

what is the most siutable clay for making leca in plant?
leca is the most imprtant elements for making lighweigh cocrete
LECA ( = Light Expanded Clay Aggregate ) is made of greasy, plastic clay of the montmorillonitic/illitic type. The calcium and magnesium content (in the form of oxides) should be less than 6%.
A high iron content in the form of Fe2O3 is desirable.
More details:
http://www.leca.ae/
http://www.leca.ae/leca/Properties.htm
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Hydroton MEDIUM Grade LECA Clay Potting Media 10lbs Hydroponics Orchid | US $9.99 | 12d 16h 53m |
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5 LBS HYDROLECA HYDROCULTURE HYDROTON HYDROPONIC LECA CLAY 4 ORCHIDS PLANTS | US $57.50 | 13d 18h 10m |
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1 LB HYDROLECA HYDROTON HYDROPONIC HYDROCULTURE LECA CLAY 4 ORCHIDS HOUSE PLANTS | US $12.50 | 13d 18h 10m |



