Sirona™ Spa Up is the perfect solution to keep your water in the spa clean and safe. This granular formula helps you raise the pH and total alkalinity levels in the water, making your sanitizer more effective and reducing the risk of corrosion in the equipment. To avoid equipment damage, always ensure that the pH level is maintained between 7.2-7.8. This product is compatible with all sanitizers, making it easy to use with your preferred cleaning solution. Size: 2 lbs