Green Killing Machine Internal 9 Watt UV Sterilizer with Power Head</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Keep your aquarium crystal clear</li><li>Controls green water， eliminates cloudiness and bacteria without any chemicals</li><li>Perfect for aquariums up to 50 Ga. (200L)</li><li>No installation at all， simply clip to any waterfall filter</li><li>Led signals need for a UV bulb replacement</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/412Z0piwd%2BL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/51M%2B4o%2BkLGL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31huV7zQohL.jpg' noproxy></br>