Dark picture, but it looks like a bristle worm. If its pinkish and looks sorta like a centipede then definitely a bristle worm and not bad at all. Great detritus eaters and general scavengers... Just don't touch it 
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Single System Setup: 210G SPS reef, 225G FOWLR, 72G water change, 50G frag, 120G sump. I promise a journal at some point! (anyone need some coral frags? I likely always have stuff that is frag-ready)
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