So much more than simply a quick fix for soil pH! Our high quality calcium product is essential for healthy cell division, root growth, and efficient nutrient uptake. Turf Turbo improves soil structure, water infiltration, resistance to insect and disease damage as well as stress and drought tolerance. 30lbs. treats 5000 sq.ft. to maintain proper pH, 2500 sq. ft. to raise pH 1/2 point.