Here is my column with the noop. You will like it and it does give off some good light..I'm likely going to buy one of these lights for a nano I have, the current light is so weak and I'd like to start populating this tank with corals. I tried an anemone with my current light and it slowly withered away. Par was about 40 where the nem was but it never moved, just withered.
So I originally had this noop light and the one I ended up buying in mind for my tank, i ended up going with the other because it would fit under the stock hood I had with it, and the noop would have had to be mounted with the arm. Now having serious thoughts of ditching the other light and brining on the noop. I need that PAR! When I get the light I can report Par readings. My tank is 18" tall (column tank) even though it's small so it should still provide useful readings for others.