I found this guy in my biocube 8 on top of the filter media above my diy fuge. I have no idea how it got there. Its dark-spotted gray color and clumped up almost like a ball. At first I thought its a small rock; i picked it up and it pinched me. My camera is out of order so i had to use my web-cam. Any idea if its reef safe? (Its already back in my tank :eek1: )