Optimal 4-18-38 Ratio: Perfect balance for flowering and fruiting stages of nightshade crops. Complete Micronutrient Package: Chelated iron, manganese, zinc, copper plus boron and molybdenum Heavy Metal-Free: Pure ingredients for safe, healthy produce. Very High Potassium Content: Enhances fruit quality and flavor. Versatile Application: Suitable for soil, hydroponic, aeroponic, and foliar feeding. Why Chelated Iron Works Better