اہم حقائق

• Inert, pH-neutral substrate — holds no nutrients, so growers have full control
• Excellent water-to-air ratio: retains moisture while maintaining 15–20% air porosity
• Available as propagation cubes (for seed starting and cloning), grow slabs, and granules
• Must be pre-soaked and pH-adjusted to 5.5–6.0 before use
• Non-biodegradable — requires specialist disposal; some operations recycle it
• Compatible with NFT, drip, and top-feed hydroponic systems