Sledgehammer encourages water movement through soil and soiless mediums. High fertilizer use can compromise plant growth over time due to concentrated mineral salt deposits. For use in established gardens, container plantings and in hydroponic systems. Sledge Hammer Root Drench is a unique rinse formula designed to remove excess fertilizer buildup and encourage water movement through soil and soil-less mediums. It helps release surface tension in the soil which will allow optimal absorption of moisture and nutrition through the plant's root system.