With a high concentration of soluble potash and silica, Grotek Pro-Silicate was developed for use in soilless media and hydroponic systems where these elements may be lacking. While not considered an essential nutrient, plants accumulate silica in macro proportions for good reason. Silica is known to strengthen cell walls and overall cell integrity, which makes plants more resistant to abiotic stress such as heat and drought. While not considered an essential element for most crops, silica helps virtually all plant species on the planet by supporting strong cell wall development. Rigid cell walls are crucial for tolerance of abiotic stress such as heat and drought, which prevents wilting and ensures strong plant performance. With two sources of potassium (potassium silicate and potassium chloride), Pro-Silicate adds the nutrients necessary for improved flowering and fruiting. Key Features: Provides nutrients to strengthen plants Supports higher yields Highly concentrated formula Application Rate:1L makes 2000L of solution.