It looks like something landed in the middle of my bright green monti cap the other day. It don't look like typical tissue loss..... It looks like a tumor or something and the tissue appeared to die around it....about half the size of a dime.... This morning the crabs were cleaning it up, but I wonder what it could be?? All of the surrounding tissue is healthy with great polyp extension and growth. I don't see anything around that could have done such a thing. I have had an acro fall off onto it before and did a very similar thing, but it healed back and regenerated quickly. I don't want to lose it or have to frag it up.... Anyone with that experience????