Ketchup,
if you are using Live sand, the water is going to turn very very very cloudy/ mulky. I was using the black live sand and it took hours (like 4 - 6 hrs) to settle. The visibility was so bad that I cannot do anything for the whole night. (I used black sand, not sure about the white ones).
Also when you place your rock, it is better to place them on the base instead of sandbed. If your rocks foundation are on the sandbed, next time when you siphon the sandbed for maintenance or keep any fishes that mess with your sandbed (like my jawfish), the rockscape might crumble.
Just some points for you to ponder.