Hey everyone...so I have this brown and white feather duster that I had been doing very well for a few months. About a couple of months ago I overdosed with NOPOX...the feather dusters feathers looked as tho someone had pulled them straight and cut them in half with scissors. Since then the duster has always been out and seemed healthy. All the sudden about a month later it seems like it has lost its crown! I have read that they will grow them back sometimes and its not too uncommon for them to do this. I have 2 other feather duster that are currently doing fine and have been in the tank the same amount of time. Thanks.