My feather duster decrowned today what a freaky sight to see the crown on the filter intake . Has any one experienced it , are there any other causes to them loosing their crown other than stress I personally can't find what may have stressed him other than a clown trying to host it. How long till it grows back ? Also do they move from the tube if they decrown ? I am not sure if he is still there but down in tight or not but I am not about to go poking around looking for him I will assume he is still there for now .How do they eat , I thought they used the crown to "capture" their food :???: