Green Algae "Tubes"?

[xbrl001]

I bought a coral and didn't use coral dip. I noticed a little green stick thing growing on the rock of the frag. Now these things are growing everywhere. Here are some pics. Just curious what it is, and if its harmful in any way. They are pretty firm and break like a tiny glass rod if you pick them off the rock.

Thanks!

 

[melypr1985]

looks like some kind of algae.
[HASHTAG]#reefsquad[/HASHTAG] got any ideas?

 

[Humblefish]

Does it look like it has snot growing on it? If so, could be early stages of dinos.

 

[AllSignsPointToFish]

Kind of looks like strands of Chaetomorpha. Do you have a sump with Chaetomorpha in it?

 

[xbrl001]

Not really...but it also is only growing on rocks. Not the sand or glass. Maybe that means something?

 

[xbrl001]

Kind of looks like strands of Chaetomorpha. Do you have a sump with Chaetomorpha in it?

I don't have a sump right now. Just have a IM fusion 10 gallon with a bag of chemipure elite.

 

[Yaya]

hi i have a 100 litter saltwater tank, and i found somthing fuzzy like tiny dandelion on my live rocks even on the wall of the tank
What are these? Are dey harmfull?

 

[Mavric]

My guess is cladophoropsis, or green wiry algae