Grotek Pro-SilicatePro Silicate is a nutritional silicate additive containing potassium and silicon. It helps keep the plants upright, positioning the leaves correctly for maximum light exposure that ultimately leads to more food production because of a high rate of photosynthesis. Pro Silicate helps the plant battle wilting and drought by acting as insulation against excess water loss at higher temperatures. This helps increase plant growth and prolongs bloom life.