I am new here! I bought a carib. featherduster worm 1 week ago. It was well for 3 days, then went in and out fast, now he's IN for 2 days...water is fine...I do have 4 hermits...Is that the reason?
I don't think he would have too much pollution if he died in a 55. One fishstore i was in, the guy was pulling them out and feeling the tube to see if it was full. There were about six tubes and none had worms in them! (another reason i refuse to buy livestock from that store!)They can leave their tubes and build a new one if they really don't like their location. Maybe he is telling you something is wrong with your params or something is going on. Are any of your corals closed up too? If so, start testing everything. temp, salinity, nitrates....