I have one feather duster in my tank and it was hiding in the rockwork for a while, I thought it was gone. Then a couple days ago I moved some rock while taking my skimmer out and I found the duster. That was great news, but now I noticed these little things on the glass that almost look like baby dusters. There are probably a dozen or so that showed up overnight. The look like they are attached to the glass at the base and then have a small crown that is almost shaped like a feather duster. Maybe it's something else, maybe it's nothing. There were none on the front glass so the only picture I could get is not real clear. Thanks for any help IDing.
