Potassium SilicateA liquid source of potassium and silica. Silica is often a forgotten element and has many benefits in the plant, including strengthening cell walls. Key Performance Improves photosynthesis and raises brix in all plants Reduces the negative effects of excess aluminium, sodium and manganese Better taste & shelf life. Enhances reproduction by improving pollination and increasing pollen fertility. Produces an armour like layer in the outer cell wall