I have something eating one, maybe two, of my SPS corals and I need some advice. Through some research and visual evidence, I believe I have narrowed this pest down to some sort of coral eating worm. The primary visual evidence I see that brings me to this conclusion is each morning this has been happening, there’s a tiny tube made of what looks like sand (Sand tube) running along the eaten parts of the coral to the newest spot that has been eaten. You can't really see it in the attached pic, but it's there on the back side. I have removed the tube a few times by scraping it off, but it usual gets re-built within a day or two. I need some advice on the best course of action. I may be able to remove the rock the corals is attached to without too much disruption, but there are other healthy corals on that rock to – orange montiporas. If I can remove the rock, should I dip the whole thing in coral dip? would a fresh water bath be better? I would think fresh water would drive the work out, but might overly stress the already stressed coral. Has anyone ever here ever seen this before, and how did you solve it? Did you catch the little bastard and if so do you have a photo/ID?