Ecoxotic is now shipping their long awaited Panorama 18″ LED system, for all of those people who need 18″, i.e. your nano is NOT a nano.  This impressive system is totally silent, with no fan and running at only 57 watts.  It combines a standard 12k White/Royal Blue system with another Royal Blue so you can tweak all you chalices and zoanthids with a healthy dose of 445nm.  More pics below.