I had the the Ocean Direct fine grade in my 120 and I absolutely hated it. I had to keep my Vortech MP40s on low or it would blow all over the tank. I had a sand sifting goby that while sifting created dust storms along with the MP40s, the rocks were covered in soot almost. In my 215 I opted for the Seafloor special grade reef sand and I love it absolutely love it, no dust storms it pretty much stays put even with three MP40s on full blast. I can't say enough about how much better I think this stuff is vs the fine grade. And now that I have the special grade I think it looks better, which I felt exactly the opposite prior but I really like the look better.
Anyway just my 2 cents.