Growth Technology's Liquid Silicon is a beneficial plant nutrient, found in virtually all soils but not, until now, in hydroponic nutrient solution. Silicon will strengthen the plant cell walls producing stronger healthier plants with massive root systems and increased resistance to pest and disease. Silicon is very basic, it has a high pH, and can therefore be used effectively to raise the pH of hydroponic nutrients solutions. Liquid Silicon is highly beneficial to plants in the range of 10–30 ppm in the nutrient solution. It is not included, and cannot be included, at these levels, in nutrient concentrates. It needs to be added as a separate component by the grower. Liquid Silicon can be added to nutrient tanks every time a fresh batch is made up.