Safer Brand Grow Big Box N252T Complete Hydroponic Nutrient Kit A complete set of liquid and soluble granular fertilizers for plants. High-quality fish and molasses give an immediate boost of nutrients that are readily absorbed by emerging roots. High-nitrogen and high-phosphorus supplements included. Hydroponic-tested and suitable for soil-based growing systems. For indoor and outdoor potted plants, including flowers, vegetables and fruits, herbs, and medicinal crops.