What are they

[greenmonkey51]

I have these things in my tanks that are a type of worm I think. They are white at the base and green toward the top and they have hairs coming out of the top. I also think that they secrete a string that looks like spider webbing. Anyone know.

 

[Ellie N]

Do you have a picture?

 

[greenmonkey51]

Sorry no camera. They stick out of the rocks. Is there a gallery somewhere of stuff like this.

 

[danch]

They do move, right? Other than that, the description sounds like Neomeris , a calcareous algae.

 

[mamagoose45]

I would agree that it sounds like Neomeris...we have some in our tank, no issues.

 

[graveyardworm]

Here's what neomeris looks like.

http://www.saltcorner.com/sections/guest/algaepage/Green/calcareousalgae/Nannulata.htm