HTH Spa Care Alkalinity Up. Low alkalinity levels in spa water can cause undue damage to surfaces and equipment. HTH Spa Alkalinity Up not only raises the total alkalinity in your pool water, but it also helps keep the pH levels from fluctuating. This helps prolong the life of spa surfaces and equipment, like filter systems and ensures healthy, comfortable water by protecting against skin and eye irritation. HTH Spa Alkalinity Up is compatible with all sanitizers including bromine, chlorine and biguanide.

• • Easily raise the total alkalinity levels in your spa water to ensure it remains clear, clean and healthy
• • Allow water to circulate for 1-3 hours, test and repeat as needed to maintain total alkalinity levels between 80 and 120 ppm
• • Helps prevent damage to spa surfaces and equipment (pumps, filters and heaters)
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