I ran that fixture over my old 75g mixed reef. IMO, I got way better coverage with that fixture than my 2 DE 150w 14k pendants. I also got way better growth out of my LPS and SPS.
You can keep whatever you want with that fixture. I am using the 36'' version on my 50g breeder and growing SPS fine, I also have a BTA and it loves the light. I did change out the stock bulbs...
HTH,
Brad