Bushdoctor Sledge Hammer is a unique rinse formula designed to remove excess fertilizer buildup and encourage water movement through soil and soilless mediums. It helps release surface tension in the soil which will allow optimal absorption of moisture and nutrition through the plant’s root system. Derived from Saponin, an extract from Yucca, Sledge Hammer is organic & natural and can be used in both hydroponic and soil applications. For optimal results, follow the FoxFarm feeding schedule.