BioGuard Balance Pak 100 Alkalinity Increaser - 4 Lb<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>BioGuard Balance Pak 100 Alkalinity Increaser</li><li>Use to maintain total alkalinity</li><li>Proper alkalinity prevents pH from bouncing due to rain， bather load and other chemical application</li><li>Helps prevent pool staining， plaster etching or liner wrinkling due to improper pH</li><li>Dissolves quickly when added directly to your swimming pool water</li></ul></div><img src="http://ecx.images-amazon.com/images/I/519d3-OPJ8L.jpg" noproxy>