Mini Maxi anemone shedding or fungus

[7hogwarts]

I have a mini maxi anemone that I've had for several years. I noticed today that it appears to be shedding a milky looking coat. I have several other maxi minis that are all fine. I just thought I'ld ask if this is normal or do I have a fungus starting. If so, what do I dip it in?