leca expand clay aggregates

leca expand clay aggregates Clean and Healthy Good Ventilation Other Features 1. Good ventilation 2. Containing much necessary elements for plant growth 3. Certain mechanical intensity, insoluble in water 4. Clean and healthy without any dust, diseases and pests 5. Convenient to use Product description Grade / Size 1-3mm 3-6mm 6-9mm 9-12mm or as required Unit Weight 400-700kg/CBM Raw Material Clay Color Brown Application Hydroponics Aquaponics Areoponics Wetland NFT system