We "Apex Green" supply Expanded Clay Aggregate (ECA) OR Leca Clay balls for Hydroponics purpose. We have best quality clay balls available in different sizes.The particles formedare rounded in shape and generally range in size from 0-30mm;these are processed to the required grading, depending on the final use. ECA is an extremely lightweight, strong and thermally insulating material.
- Particle size 0-2 mm, 2-8 mm, 8-15mm, 15-30mm
- Bulk Density 300 to 750 Kg/m3
- Cylinder Compressive Strength 0.6 to 3.0 N/mm2
- Dry Thermal Conductivity 0.09 to 0.10 W/mK
- Surface Alkalinity 7 to 9 pH
- Water Absorption 18 to 20 % of size