Hot Tub Things Spa pH and Alkalinity Up 2 Lbs - Protects Your Spa From Corrosion<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Keep hot tub water in check -- this product increases pH and Alkalinity to obtain the proper balance!</li><li>America's #1 Trusted Brand of Hot Tub Chemicals</li><li>Safety Tested to Assure Quality， Guaranteed Performance</li><li>Formulated Exclusively for Hot Tubs And Made from the Purest Chemicals Available</li><li>Compare to Leisure Time Alkalinity Increaser</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41nhYB91UrL.jpg" noproxy>