Monopotassium Phosphate Fertilizer 0-52-34 100% Water Soluble Hydroponics"Greenway Biotech Brand" 3 Pounds 3 Pounds of Greenway Biotech Brand Monopotassium Phosphate 0-52-34 Contains 52% Phosphorous and 34% Potassium and is 100% Water Soluble. Great Source of Water Soluble Potassium and Phosphate It Helps With Roots Strength, Buds, and Blooms Great Water Soluble Fertilizer For All stages of Growth