Brown vein like structures on rock.

ReeferGuyAlexK · Dec 1, 2020

Hey guys I'm still relatively new to reef keeping. I'm seeing this small brown vein like structures growing on my rock structure. Does anyone have idea to what it is and if it's a bad thing?
Thanks in advance guys

EvanDeVita · Dec 3, 2020

That looks like Cyano.... It is growing in a weird way, however.

RedFrog211 · Dec 3, 2020

It does have a cyano appearance, but like you mentioned, the growth is throwing me off. Maybe a kind of macro? OP, does it come off the rock work easily when you touch it?

ReeferGuyAlexK · Dec 4, 2020

EvanDeVita said:
That looks like Cyano.... It is growing in a weird way, however.

Yes it's weird as there are smaller ones on the other side as well.

ReeferGuyAlexK · Dec 4, 2020

RedFrog211 said:
It does have a cyano appearance, but like you mentioned, the growth is throwing me off. Maybe a kind of macro? OP, does it come off the rock work easily when you touch it?

I haven't touched it as I want to know first what it is. That big ones have now actually disappeared, now it's just smaller structureson the right side. Pretty weird