Dolomite Lime Plus Magnesium and Calcium"Greenway Biotech Brand" 20 Pounds 20 Pounds of Organic Dolomite Lime Powder Plus 11.8% Magnesium and 22.7% Calcium Helps to Adjust the pH Level Natural & Organic Source of Calcium and Magnesium to Restore the Essential Plant Secondary Nutrients Great to Make your Own Compost and Worm Bins Greenway Biotech, Inc. Brand