I had one in my 90. I never saw it during the day. If I looked after lights out, I could see it running about. After a while I started to notice my zoas lashes getting really stubby and my Yellow Polyps lashes getting shorter. Neither was looking very good.
It took me 3 nights to catch the peppermint. Within a week the corals were looking better. It's been over a year and everything looks great, so I won't be putting another one in there again. And yes, it was a peppermint not a camel.
This was just my experience, apparently others have had better luck. Also, I had a few aptasia, which I scrapped off. They never came back, so the shrimp may have taken care of them.