Looks good Wannarace,yep,looks like a little coralline dieoff or bleach.I'm sure it will come back.I don't feed my GSP and Frogspawn(Euphyllia),they must get enough nutrient from the water column and lighting.I do feed Phyto once to twice a week for inverts(feather duster) and soft corals,maybe they are getting some benefits from that.