product description:
Growstone super lightweight drainage layer. Place 1"-2" thick layer at the bottom of growing container. Helps create aeration for the roots and will help prevent root rot from overwatering. Grow stones are engineered to provide an effective ratio between aeration and moisture. While other substrates maximize either air or moisture, grow stones allow for both moisture absorption and drainage. Most important in any growing medium is the air in the medium after drainage. Plant roots require oxygen for growth process respiration. Grow stones make for an ideal substrate due to their small and large pores. When irrigated, water is held in the Micro pores but quickly drains through the macro pores, allowing air to flow through the substrate, bringing oxygen to the roots and removing carbon dioxide from the root zone. Grow stones are manufactured using up to 98% waste materials. They replace mined materials like pumice, perlite, clay pellets, and stonewool, reducing environmental degradation. At the same time, since the product largely consists of recycled glass bottles, a large amount of glass waste is given a new life, keeping it from the landfill.
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