Pool Mate 1-2430-12 4-in-1 Natural Water Treatment and Clarifier， 1-Quart， 12-Pack</br></br><div style="text-align:left"><b>[Product Information]</b><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></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/61h0ylcugWL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/412%2Begt7e3L.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/51A0KDhGP4L.jpg' noproxy></br>