Leisure Time 22339 Spa Up， 2-Pound<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Always maintain the pH of your spa water between 7.2-7.8. A low pH reading (below 7.2) can cause equipment corrosion or scale formation.</li><li>Compatible with all sanitizers including chlorine and biguanide</li><li>For more than 25 years， Leisure Time has been the premier name in spa water care</li><li>Adjusts water pH and alkalinity upwards</li><li>Fast-dissolving granular product</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31wgU7u9nQL.jpg" noproxy>