How do I prevent scaling?

For spas up to 500 gallons add 16oz of HT Stain & Scale each time you fill your spa and 32 oz for swim spas. The best time to add this is while you are filling the water and before any sanitizer is used. For spas with excessive mineral content be sure to add either 2 oz. of HT Protection Plus or 1 oz. of HT Stain & Scale weekly. If you need to top off your spa with fresh water at any time, be sure to add about 2 ounces of HT Stain & Scale for every 50 gallons of new water you add in.

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