Trusted around the world by countless growers, Dutch Master Gold Zone ensures that plant root systems and their environments are optimized, so they take up to 100 percent of what they need, all of the time. Zone is specially formulated for use as a full time maintenance program, and is the front line tool of choice for the ultimate root zone environment. Designed specifically for use in hydroponic systems, soil, and coco, Zone delivers its high-performance action in any media or system.