I have a piece of LR that came with a small (2 inch) stalk which I believe to be a gorgonian. It is purple and has small polyps that extent out of it. I've got very low light right now (2.5 watts/gallon) and will eventually upgrade to around 5 watts/gallon. Is there something I can do for this to keep it alive or will it die? Wasn't sure with my lighting if it could survive. If so, what should I feed it?