Deep Blue Professional ADB43219 Actinic T5 18-watt Lamp for Aquarium， 20-Inch</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>These Ultra Bright lamps fit T5 high output fixtures</li><li>They will not work in standard fluorescent fixtures</li><li>Brings out the stunning colors in both marine and freshwater life</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/31QqG8frm4L.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/21cypUEE3eL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/311p8vfTtWL.jpg' noproxy></br>