Sally lightfoot crab

[reef bound]

Just wondering what anyone thinks about a Sally lightfoot in a reef tank. I had one in my Red Sea Max, then moved it to my 180g mixed reef, where he decided he liked life in my overflow. Hadn't seen him for months, so assumed he was a goner. Just working on the tank and found and captured it, but in the meantime I had read some bad reports on them when they got older. He did fine with my corals and fish before, but he is almost a year old now. I could put him in my Red Sea again with my dwarf lion, I don't think he could do much damage there, or should I stick him back in the big tank and take my chances? Any experiences with these guys? Thanks.