Maintain perfectly balanced spa water with SpaGuard® Rapid-Dissolve Alkalinity Increaser Tabs (1.25 lb). These specially formulated tablets quickly raise total alkalinity—an essential measure for stabilizing pH, preserving spa equipment, and enhancing bather comfort. The effervescent design simplifies treatment: drop the required number of tablets (2 per 250 gallons for a ~30 ppm increase) into the spa while jets are running and let the mixture disperse. With this product you’ll avoid pH swings that lead to cloudy water, skin or eye irritation, and equipment corrosion. Suitable for all types of sanitizing systems—chlorine, bromine, saltwater or mineral—you can integrate this into your existing routine with ease. The generous 1.25 lb size gives you multiple doses for the season, making it a practical choice for spa owners who prioritize water stability and carefree maintenance.