Robelle 2825B Calcium Hardness Increaser for Pools, 25-Pounds

This is a dry granular product that increases the total hardness in pool water to the recommended range. The desired range for calcium hardness is as follows: Vinyl Pools: 200-300 ppm, Tile and 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 included chart. Place this product into a plastic bucket already filled with swimming pool water. Do this in a ration of up to 2 pounds 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 pounds of this product per 2 hour period.

Calcium chloride for pools is a product that rapidly increases total hardness and helps prevent corrosion or etching of pools. It has an ideal calcium hardness range of 200 - 400 ppm, and 8 ounces of the product can raise the calcium hardness level by 10 ppm per 5,000 gallons of water. This product prevents the staining or etching of your pool's surface, as low calcium hardness levels can cause water issues.

To test for calcium hardness, use a reliable test kit. This will help you determine if the calcium hardness is within the desired range for your pool type. If the test shows the calcium hardness is less than the recommended range, follow the instructions on the included chart to add the appropriate amount of this product to your pool water.

When adding the product, it is important to do so in a controlled manner. Start by placing the required amount of the product into a plastic bucket filled with swimming pool water. The ratio should be up to 2 pounds of product per approximately 5-gallon bucket of water. Slowly pour this solution around the perimeter of the swimming pool while the circulating system is operating. This will ensure the product is evenly distributed throughout the pool water.

It is crucial to follow the dosage guidelines closely, especially for larger pools. In a 10,000 gallon pool, do not add more than 10 pounds of this product per 2 hour period. Exceeding the recommended amount can lead to water balance issues and potential damage to the pool surface.

By maintaining the proper calcium hardness range with this calcium chloride product, you can help prevent corrosion, staining, and etching of your pool's surface. This will not only extend the life of your pool but also keep it looking its best for years to come.

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