So a couple of days ago, I noticed that my trochus snails cleaned up most of the algae on the rocks. I made a post asking if they would starve, but the general answer was no and since that post, the algae has come back, but the snails are not cleaning it up. Instead, they like to run all over my zoas and mushrooms, which I have never seen before. I also have noticed that they are slowing down and becoming less active during the night as well. Should I just leave them be? If not, what should I do?