Robelle calcium plus is used to raise calcium hardness levels when measures drop below the recommended range of 200-400 ppm. If calcium hardness levels are too low the "soft water" will corrode pool equipment, etch pool plaster & may cause metallic stains. This is a dry granular product that increases the total hardness in pool water to the recommended range. Directions for use: test for calcium hardness with a reliable test kit. The desired range for calcium hardness is as follows: vinyl pools - 200-300 ppm. Tile & exposed aggregate pools - 200-400 ppm. Marcite, fiberglass or painted pools - 250-400 ppm. If the calcium hardness tests less than the desired range, add this product according to the guide below. Place this product into a plastic bucket already filled with swimming pool water. Do this in a ration of up to 2 lb of product per approximate 5 gallon bucket of water. Slowly pour this solution around the perimeter of the swimming pool while the circulating system is operating. In a 10, 000 gallon pool, do not add more than 10 lb of this product per 2 hour period. For 5, 000 gallon pool: to increase by 10 ppm add 7. 2 oz. , to increase by 20 ppm add 14. 4 oz. , to increase by 30 ppm add 1. 35 lbs. , to increase by 40 ppm add 1. 8 lbs. , to increase by 60 ppm add 2. 7 lbs. , to increase by 80 ppm add 3. 6 lbs. , to increase by 100 ppm add 4. 5 lbs. For 10, 000 gallon pool: to increase by 10 ppm add 14. 4 oz. , to increase by 20 ppm add 1. 8 lbs. , to increase by 30 ppm add 2. 7 lbs. , to increase by 40 ppm add 3. 6 lbs. , to increase by 60 ppm add 5. 4 lbs. , to increase by 80 ppm add 7. 2 lbs. , to increase by 100 ppm add 9 lbs. For 20, 000 gallon pool: to increase by 10 ppm add 1. 8 lbs. , to increase by 20 ppm add 3. 6 lbs. , to increase by 30 ppm add 5. 4 lbs. , to increase by 40 ppm add 7. 2 lbs. , to increase by 60 ppm add 10. 8 lbs. , to increase by 80 ppm add 14. 4 lbs. , to increase by 100 ppm add 18 lbs. 100% calcium chloride compound.
EAN: 0034261280406
Categories Patio, Lawn & Garden, Pools, Hot Tubs & Supplies, Cleaning Tools & Chemicals, Chemicals & Water Testing Products, Pool Balancers,
| Brand | Robelle |
| Country of Origin | USA |
| Customer Reviews | 4.6 4.6 out of 5 stars 1,007 ratings 4.6 out of 5 stars |
| Item Form | Granular |
| Item model number | 2804B |
| Item Weight | 4 Pounds |
| Manufacturer | Robelle |
| Product Benefits | Prevents Stains |
| Product Dimensions | 3 x 8.8 x 7.3 inches |
