Something on my glass

[NewMelee]

I found white spots on my glass today. I can't get a pic since my camera sucks. They look white and are swirled like a snail shell. Mainly on the glass but there are some on the rocks, maostly in one corner right now. Any ideas? Thanks in advance.

[returnofsid]

Very common, harmless and unfortunately, I can't remember the name...lol. In appearance, similar to Vermetid snails...but not.

[Kdocimo90]

small feather dusters

[WaterKeeper]

Yes a spirobid, a type of tube worm.

http://web.uvic.ca/~reimlab/littspir.jpg

[Lenny718]

Ditto! sounds like spirobid to me also.

[NewMelee]

Thats what they look like, Just all of the sudden appeared. I have some good sized tube worms are they reproducing?

[WaterKeeper]

No Melee,

Those are adults on the glass. They tend to come in droves with numerous new ones appearing daily. Sometimes they are a pain as they are not always easy to remove. However, they do no harm and usually just peter out on their own after a few weeks.