RAW Potassium contains 50% water soluble Potash derived from potassium sulfate. This is the highest concentration of natural water soluble Potassium available to the home gardener. During fruiting and flowering, large amounts of potassium are used by the plant in a matter of days which can lead to potassium deficiencies. RAW Potassium is ideal for boosting Potassium (K) levels, treating deficiencies and creating optimal recipe solutions. A 2 oz package of RAW Potassium makes up to 200 gallons, an 8 oz package makes up to 800 gallons and a 2 lb package makes up to 3200 gallons.