Pool Mate 1-2430-02 4-in-1 Natural Water Treatment and Clarifier， 1-Quart， 2-Pack<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>4-in-1 water clarifier</li><li>Gets rid of oil and scum lines and excess metal</li><li>Makes filter more efficient and is biodegradable</li><li>Removes phosphates to prevent algae</li><li>Recommended weekly use</li></ul></div><img src="http://ecx.images-amazon.com/images/I/513mKSyDhzL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/412%2Begt7e3L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51A0KDhGP4L.jpg" noproxy>