Silicon in the form of Potassium Silicate KSiO3 is used in horticulture to add necessary Silicon, an element plants use to strengthen their cell walls and their overall structure as a consequence. I am planning to add silicon supplement to containers filled with standard peat potting soil, and compare with those without added silicon.

A question arises about compatibility of Silicon to standard potting soil: KSiO3 is highly alkaline while peat moss is acid. Would that trigger an unwanted chemical reaction. Will that reaction release pure silica which is not available for plant uptake?