7 Day Tablets Calcium Flake 1 lb Raises 10,000 Gallons 8 ppm Item # Size 1847 4 lb bag 20 per case 1850 10 lb pail 3 per case 1851p 25 lb pail 1 per case MSDS Info 7 Day Sticks One A Day Tablets Granular Chlorine Bromine Balancers  - Calcium Hardness  - pH Reducer  - pH Increaser  - Total Alkalinity  - Stabilizer Shock Treatments Algaecides Clarifiers and Flock Demineralizers Liquid Chlorine Lithium Calcium Hypochlorite Winter Kits Spa Chemicals Maintenance Items Private Labeling