Features & details STRENGTH FOR ALL PLANTS: TPS Nutrients Silica Gold is a bio-available silica that helps strengthen cell walls. This silica protects plants from stressful conditions. CONTAINS CELL WALL THICKENING SYSTEM: Silica Gold has all three components necessary for increased cell wall thickness: silica, hyrdoxyproline-rich glycoproteins, and potassium. COMPATIBLE WITH OTHER FERTILIZERS: TPS’s Silica Gold is compatible in solution with other TPS products, it is also compatible with supplements from many other fertilizer brands. ENERGY DENSE FERTILIZER FOR FAST GROWING PLANTS: All of TPS’s fertilizers and supplements are nutrient dense, reducing waste and making sure you don’t pay for water to be shipped. DESIGNED TO BE SUSTAINABLE: Every ingredient and every process was designed to keep sustainability in mind. TPS Nutrients chooses only the best and most renewable materials to build these products.