1.5 years and still doing fine. Has had ich the entire time.
Update: Almost 2.5 years now. Still has ich. Still doing fine.
Update: Died at about exactly 3 years in the tank. Suspected cause of death: Ich or secondary infection related to ich.
__________________
400 gal reef. Established April, 2007. 3 Sequence Dart, RM12-4 skimmer, 2 x OM4Ways, Yellow Tang, Maroon Clown (pair), Blonde Naso Tang, Vlamingi Tang, Foxface Rabbit, Unicorn Tang, 2 Pakistani Butterflies and a few coral gobies
My Tank:
http://www.canreef.com/vbulletin/showthread.php?t=28436