Acro Eating Flat Worms.....one of the many scourges and problems of SPS along with redbugs.....check out the SPS forum and see the damage and fear they bring.
The debate of whether or not SPS will survive in a small nano is a debate similar to is T5 or MH better lighting.
The old "watts per gallon" adage works as a guide line for keeping corals, but is not set in stone.
The real matter of lighting SPS is intensity rather than amount.
In your case with the 96w you could probably keep SPS, but I wouldn't go overboard and by an expensive frag and hope to keep it. I would think in a tank that size the SPS would die from alk/temp/salinity swings way before the light ultimatly comes into play. I say if you want to get your feet wet with SPS and catch the bug that cost me ohhhh $500 in about a foot of colored sticks in the last couple of weeks, then go right ahead.
I first bought two colonies from Aqualife for $80 and RTN'd them in less than a week, due to alk/salinity/temp swings....so I think putting in the nano would be a good experience before you get the bug and buy lights, reactor, controllers, and on and on and on.......For me its the challenge of SPS that draws me to it.
In fact Edwin, I have some starter Green Montipora Digitada I could let you try out. By the way, I live real close to you (Fulton and Northrop)-Doug