Dutch Master ZONE is the technically advanced root zone conditioner that helps your plants build healthy and productive root systems. Designed specifically for hydroponic systems, ZONE allows your plants to maximally absorb nutrients by creating an optimal root environment. Numerous scientific studies, including our own, have shown plants with the healthiest root systems absorb larger quantities of nutrients and water that leads to superior growth & development of your plants. ZONE minimizes unfavorable root zone conditions that can limit the health and effectiveness of your plants root system.