I got a new featherduster about a week ago, and unfortunately had to be away for the week. My fish sitter took great care of the tank, but the feather duster lost its 'feathers.' What should I do? Was I feeding it wrong? How am I supposed to feed it? I need to know if its dead or not because the LFS that I bought it from has a guarantee deadline that I have to meet. Any help would be appreciated. Thanks!