Can anyone tell me what this is on my looney tunes stylo? I noticed the growth when I first got the frag but I didn't think much about it and figured it would go away in time with healthy water, but it's only gotten bigger. It's fleshy and soft to the touch. Brown in color with very small polyps on it. It's not algae and it doesn't appear to be any kind of pest. Can coral grow tumors? I'm having trouble getting a picture that's more clear.