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Summary: The GASPRO 2.5lbs Lava Rocks are small volcanic rocks, approximately 1/5 inch in size, with a varied shape for a unique appearance in plant pots. They are beneficial for plants that thrive in acidic soil, such as succulents and cacti. These porous rocks help adjust soil pH, enhance drainage, and promote root health. They are natural and safe for plants, being corrosion-resistant and long-lasting, making them ideal for use as top-dressing for various plants.
