Mono-silicic acid (H4SiO4 aka ortho-silicic acid), the form found in Stout MSA, is the most bioavailable form of silicon. Stout MSA is immediately available to your plants and is stable over a larger pH range when compared to other silicon sources like potassium or sodium silicates (ex: will not gel under acidic conditions). This allows for more predictable delivery of silicon to your plant?s tissues which is important since silicon is immobile and therefore needs to be constantly supplied for maximum results. Stout MSA increases stem and leaf strength allowing the plant to better support dense flowers and fruits. Available silicon is also well documented to alleviate stress from heat, drought and frost damage. User friendly application rates of 5 mL per gallon makes it easier to use with dosers and injectors.