So I bought a really cool green candycane coral a few months ago, and slowly I've seen these dark brown things grow on it. There's one on the base, and one up near the top, and it looks like the one near the top is irritating the part of the coral thats near it. Here's the pictures In the second one, you can see it better, it's right in the middle. [ATTACH]16460.vB[/ATTACH] [ATTACH]16461.vB[/ATTACH]