Almost. Now add 50 pounds
To emphasize the point of my post, all I'm saying is that filtration wise, having less rock is not a bad thing. I have a much easier time managing water quality, I have enough room to mount my corals, I have enough room for my tangs to swim and hide, AND I still have no NO3.
I used to run the 75 with at least 130 pounds and no problems, I'm just saying that you don't NEED that kind of rock. If you want it, fine, nothing wrong with that.