Unknown stringy algae

[cillam]

So I have some cheato in my refugium along with a bio brick which has green hair algae on it but now I have this long stringy stuff, not sure what it is. It almost looks like cheato but grows from the bottom of the sump.

 

[WheatToast]

It could be Chaetomorpha that has developed a holdfast or possibly one of the Ulva species that used to be classified under the genus Enteromorpha, though it is hard to tell without clearer images.

 

[cillam]

after further looking i think it is really long hair algae. either way its where it needs to be the refugium.

 

[I never finish anythi]

after further looking i think it is really long hair algae. either way its where it needs to be the refugium.

I don't think it's gha tbh

 

[cillam]

Okay so a little update on the algae, it's grown a lot here is a photo of a little bit I pulled out.

 

[Tritie]

Is it the angle hair chaeto? I recently got some and when the person gave it to me, I thought about chucking it because it looked like gha. However, it had a more a solid texture and held shape out of water.