Dutch Master SILICA is a special formulation of plant available silicon, designed to help restore natural plant levels of silicon so your plant can build strong cell walls resulting in a well formed plant – just like they would if they were grown outside in the ground. When using a modern performance based nutrient like GOLD NUTRIENT, SILICA is essential to help maximize the results you get from these high tech wonder nutrients. SILICA use should be started early in the vegetative stage and continued through until harvest for optimal results as SILICA’S benefits are optimized with long term use. Designed specifically for use with all growing media, SILICA’s high performance action performs equally well in any system – truly universal!