Clorox Pool&amp;Spa Active 99 1-Inch Chlorinating Tablets， 3.75-Pound 22003CLX<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>4-In-1 formula sanitizes water for a clean， clear pool</li><li>Eliminates bacteria in the water</li><li>Prevents algae and removes organic contaminants</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41dE5DFtx-L.jpg" noproxy>