I just bought this really nice piece of live rock from Inland Aquatics and it has a little bit of caulerpa growing on it. Just what needs to be done to so it grows? As of right now I only have a clown in my tank along with about 2 doz. hermits and a few snails. Will the hermits or snails damage it? I do have one of my power heads set up to heavily aerate it. So far its still its rich green color. My lighting is a Coralife 50/50 bulb, will that be enough?