Helios 15-watt T6 Ultra Spectrum Grow Light for Aquarium， 18-Inch， 6-Pack</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Fits all T-8 and T-12 fixtures</li><li>Up to 30% brighter than standard T-8 and T-12 bulbs</li><li>High quality</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/41dctiGNewL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/41HCAFcyEzL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/41fD6nGODSL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/61uHehats8L.jpg' noproxy></br>