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- Inert, pH-neutral substrate β holds no nutrients, so growers have full control
- Excellent water-to-air ratio: retains moisture while maintaining 15β20% air porosity
- Available as propagation cubes (for seed starting and cloning), grow slabs, and granules
- Must be pre-soaked and pH-adjusted to 5.5β6.0 before use
- Non-biodegradable β requires specialist disposal; some operations recycle it
- Compatible with NFT, drip, and top-feed hydroponic systems