Rendezvous Spa Specialties Spa Increase Rendezvous Spa Specialties Spa Increase is a liquid formula specially designed to adjust pH and alkalinity levels. It gently raises both pH and total alkalinity. Sanitizers work most efficiently when pH is kept in proper range. A properly balanced spa will require less sanitizer and less maintenance. Giving you more time to enjoy your spa or hot tub. Keeping your spa or hot tub water balanced is an important step in getting the most out of and preserving the life of your spa or hot tub, less wear on your spa & plumbing and equipment. *Item will ship USPS Priority Mail if ordered individually or pack of 2 and will ship same day, if not next day of order.
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