Hello everyone. I don't know if I have a problem or not, but there are some things growing all around my tank. The are mostly in clusters, they don't move around, they are stationary. They are small, but growing. Here is a pic of some of the larger ones growing at the base of one of my flowerpot coral: [url]http://www.amhealy.com/aquarium/Coral.jpg[/url]\r\n\r\nDoes anyone know what those are? The other day I turned a rock over and found them growing on the flip side, in a cluster. I have spotted a few here and there in other parts of the tank. \r\n\r\nGood or bad??? Thank you!!