GS-4 Moisture is a ready-to-use Growstone® Coco-Mix designed for hand watering with triple washed coco coir and added beneficial microbes (Xtreme Mykos). This blend holds water while maintaining excellent aeration, eliminating compaction and preventing overwatering & root rot. Growstone® manufactures products for the horticultural industries like hydroponics, aquaponics, green roofs, vertical walls, water filtration and other markets making use of recycled glass that would otherwise be buried in landfills.