Aqua Chem 5-Pack Shock Xtra Blue for Swimming Pools， 5 Pounds<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Kills bacteria and algae</li><li>Creates sparkling water</li><li>For use in all pool types</li><li>Reduces chlorine odor and eye irritation</li><li>Will not increase pH</li></ul></div><img src="http://ecx.images-amazon.com/images/I/61PSgqb1yUL.jpg" noproxy>