Red Gorgonian

Seems to be a "Diodorgorgia nodulifera". What do you use to feed it ?

I feed it Cyclopeeze and DT's live Phytoplankton

I have been reading about the filter feeding gorgonians, and how they typically starve to death in a few months. I have had this one for just over 3 months and have noticed that it has actually been growing. It has attached itself to the rock I placed it on and the branches have all lengthened. Sorry in advance for this newbie question, but does growth mean that this coral is doing well or could it still be slowly starving?