What type of gorg are you looking at? I have kept sea plumes and candelabrums and knobby candelabrums. They like LOTS of light, very strong waterflow and regular feedings. I have never actualy target fed mine, I feed the entire tank a blender mush and they feed when the fish do. All gorgs will shed a waxy film from time to time, as a way of cleaning themselves of algae, detritus, etc...