i got my nova extreme coming tomorrow and i was wondering what kind of led moonlights you fellow reefers fitted into this fixture...any ideas please let me know?

Did you get the 20" version? I had mine and wanted to do moonlights and tried a Current USA powerbrite, but it was way too bright on my Biocube and spotlighted really bad. I would try something simple mounted to the back like these:

http://www.current-usa.com/lunarlight.html

i wanted to try to mount something in my fixture without adding anything else

Have you looked in the fixture, there is really very little room. Not to mention the heat issues. You can try some crazy wiring and LED mounting, but it seems to be more hassle than the benefit is worth.

I have the rk2 moonlight that I will placing in my nep...they are nice moonlights..

are those the small strip looking like led? you planning on putting it inside the fixture?