That gets a bit tricky to do on a small tank as SPS tend to like higher flow than almost anything else. It is doable however, but you just need to adjust your powerheads and aquascape accordingly.
You could probably do a smaller to midsized Tunze Nanostream on one end and the skimmer on the other, or a nanostream on either end and the skimmer in the center. The trick is positioning it such that your sand isn't all blown into a pile in the front of the tank.
__________________
32"x32"x20" Cube-ish tank
|