RAW Phosphorus is a soluble plant supplement that is used for horticultural purposes. RAW Phosphorus contains 61% available Phosphate which is the highest concentration of fully water soluble Phosphorus available to the home gardener. This product is used to treat deficiencies or boost Phosphorus levels. A 2 oz package of RAW Phosphorus makes up to 200 gallons, an 8 oz package makes up to 800 gallons and a 2 lb package makes up to 3200 gallons. RAW = soluble.