Red Lava Rock (Horticulture Grade)

  
Lava rock is a naturally occurring (processed for even size) and highly porous mineral substrate/ additive that purifies soil, improves drainage, and increases air flow for healthy root growth. Lava rock can be used alone or in an inorganic rocky mix, semihydroponically with or without a water reservoir, depending on the plant watering needs. It can also be used as an additive in traditional soil mixes, or for top or bottom laying.

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