7 Day Tablets pH Decreaser - Sodium Bisulfate Item # Size 1800 1 lb bag 40 per case 1809 2 lb bag 16 per case 1802 6 lb bag 8 per case 1825 25 lb bag 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