SpaChoice Calcium Hardness Increaser for Hot Tubs

To enhance the calcium hardness in low hardness spas and hot tubs, this product is recommended. Insufficient hardness levels can result in damage to plaster and equipment corrosion. Prior to application, conduct a calcium hardness test using a test kit or seek guidance from a local spa dealer. The desired hardness range is between 200-400 ppm (parts per million). The addition of 1 ounce of this product per 500 gallons of water will increase the hardness by approximately 10 ppm. Follow these steps for optimal results: 1. Utilize a calcium hardness test kit to determine the required amount of product. 2. Add the appropriate quantity with the spa or hot tub's equipment running. 3. Allow the filter to run for 1-2 hours. 4. Retest the water after 20 minutes. Maintaining the desired hardness level of 200-400 ppm is crucial. One of the advantages of this liquid product is its user-friendly nature when compared to granular alternatives.

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