p.s. Figured i would share this with you... http://www.nano-reef.com/forums/index.p ... ht+advance It is an entire 14 page thread about this particular fixture. Some people do a simple modification to it because sometimes it sticks out over the tank too far and they modify the arm to fix that. overall good light. Supposedly, the fixture comes with a quartz glass sheath that helps protect the tank inhabitants (and you) from the UV rays.
Jesse
Jesse