I just got two mall pieces of Monti cap the reefer I got them from broke the pieces off right there for me his months were healthy and beautiful now I see black specs on them I did a freshwater dip on them both great weekend things in the water but it also came from the rock to as I glued them on rock they have great color look healthy will these black things cause any harm? What should I be dipping them in to get rid of them?