little white spirals on glass

[velocityoflove]

They're in my boyfriends tank which doesn't really have anything in it besides a snail, a few hermits, and mangroves.there are isopods and I just noticed these little white spirals. So far from Google, I've gotten feather duster worms or pileolaria.

Any other ideas?

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[jmike50]

+1 with Geoff...Looks like baby featherdusters

 

[jdavid]

They are Spirorbis worms if you want to look them up. a kind of feather duster. they tend to multiply in well established tanks on rocks, the back wall, powerheads, etc. harmless filter feeders.