Since I asked many questions about the Finnex Fugeray and Ray II, it's only fair that I report back on my new Fugeray 16".
The lights looks fantastic, it is much much brighter than the stock light on the Fluval Spec 5 and I believe is the appropriate choice for low-medium light on a 5G at approximately 11-12" above the substrate.
Thank you all that contributed to my questions!
I concur. I just swapped out the fluorecent hood light with the 20" FugeRay and dayumn! Everything looks so purdy and my java ferns and riccia are pearling. I too was going back and forth on the Fugeray and RayII and all I have to say is that I am quite happy with the FugeRay.