Debco Horticultural Charcoal is chunky and lightweight, retains moisture, and loosens up mixes and soils allowing room for root system development| Charcoal can also be used as a top dress to act as a filter to purify air and water passing through it| Perfect for growing Orchid Epiphytes, fish tanks and terrariums| Horticultural Charcoal is an organic matter primarily composed of carbon| Ideally used as a conditioner to improve potting and planting mixes| Helps with drainage and contains natural phenols that aid in preventing plant disease