Good or Bad algae? What are they?

[I666NoB666I]

What are these? Hair and Beard?

 

[ErinCahir]

Looks like hair and cyano to me. What are your parameters?

 

[I666NoB666I]

The stuff on the rocks is Hard, Its just coralline I think, I mean the hairy thing on the left of the rock on the 2nd pick, some black hair things close together. I just did a 20% water change yesterday.

SG - 1.024
A - 0
N2 - 0
N3 - 20
PH - 8
GH - 180
KH - 240