Spa Essentials Total Alkalinity Increaser Granules for Spas and Hot Tubs, 2-Pounds

This Spa Essentials 2 lbs. Total Alkalinity is an effective way to raise hot tub or pool water alkalinity, which stabilizes the pH level. A stable pH level minimizes swimmer skin and eye irritation, improves water clarity, and prevents equipment corrosion or scaling. Use 1.5 ounces per 250 gallons of water to raise the alkalinity level 25 ppm.