So first thing is first. my params for my water are normal. haven't done anything different except add my anthias but I've been keeping up with water changes to make up for the add feedings. now I started to notice my blue chalice has been having problems and now it's with another. the second one has never had any problems up till recently and its worrying me. now what really threw me off was my new acan I've had for a week just ended up woth no flesh in a matter of one night. it's nt near anything except a chalice but they're spaced apart pretty far. could it be the peppermint shrimp I have in my tank?