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SpaChoice 1-Quart 2-Pack Premium Increase Calcium, Liquid Calcium Hardness Increaser Hot Tub, Made in USA
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Product Review
Packaging may vary
The ideal hardness level is 200-400 ppm
1 ounce of product per 500 gallons increases hardness by about 10 ppm
Customers prefer this liquid product as it can be easier to use than granular alternatives
