After I first read this thread, I tried peroxide to combat my Dinos and it worked well for me. I followed the 1 mil. per 10 gallons of water each night routine. I also recently cleaned my sump really well along with upgrading my skimmer, none have come back yet.
Edit: I do not have any SPS though, my tank is all softies and anemone's, none of which were bothered by the peroxide.