Pumice is a porous volcanic rock with a neutral pH level and is comprised of highly vesicular strands permeated with tiny air bubbles. The tiny pores on the surface of the pumice act as microscopic reservoirs to absorb and store nutrient-rich moisture, vitamins, and minerals. Pumice is a 100% NATURAL growing media that provides an ideal balance of moisture retention, gas exchange, and draining capabilities. Using our pumice as a growing media can immensely improve the quality and growability of soils; it acts as an aeration system, retains moisture, and supplies and holds nutrients in the root zone. USING PUMICE: -Improves the quality and growability of soils -Saves on Water Costs & Drastically Improves Water Conservation -Is Rich in Vital Horticulture Minerals & Nutrients -Acts as an aeration system, allowing more oxygen to the soil -Retains moisture; each pumice stone acts as a sponge & absorbs water -Supplies and holds nutrients in the root zone.