The gorgonians will need more food than just tossing stuff in the water. You need to research what they eat and get some high quality foods if they have any chance. There are multiple methods of target feeding corals like that. One is to use a turkey baster or feeder made for reef tanks and squirt food upflow of them, you coudl even use a pipette from a test kit. Some people cut the bottom off a tow liter soda bottle and when they feed they put the bottle over the coral and squirt food in the little hole where the cap was. This keeps the food around the coral while it has time to eat it all.
The best foods will be stuff like Golden Pearls, Cyclopeeze, Reef Nutrition foods, etc. They can't eat big stuff like mysis and even brine.
If you try adding it to the water either two things will happen, the corals will die because they never get enough food or the tank turns in to an algae farm because you are feeding so much.