Success Nutrients Silica: Strengthens Plant Tissue - 1 Quart - Case of 8PLEASE NOTE: 5 Gallon containers require a self venting spout Silica is a beneficial supplement to be used in conjunction with Success Nutrients plant and food supplements. Strong plant tissues are generated from higher levels of silicon that helps the plant flourish in adverse environmental conditions such as heat, drought or frost. Silica is very effective in both Soil and Hydroponic gardens. Nutrient Composition Macronutrients (N) 0 (P) 0 (K) 0