Solu-Cal Enhanced Calcitic Lime is the premier brand of calcium-enriched lime for quick and efficient soil adjustment. Solu-Cal works rapidly to adjust soil pH in as little as 6 to 8 weeks. The use of patented PHCA Organic Humic/Fulvic Acid Technology in Solu-Cal significantly increases the availability of applied and stored nutrients in the soil. Proven to be 75% more effective than traditional pelleted lime, one 50-pound bag of Solu-Cal Enhanced Calcitic Lime is equally as effective as four 50-pound bags of standard lime.