Calothrix or Lyngbya?

[Just John]

I am pretty sure this is either Calothrix or Lyngbya, but not sure which one. Can anyone help with the ID? Here is a picture of it growing on the UV sterilizer I put in to help kill it. Ironically, it grows here faster than anywhere else.

pH - 8.1
Phos - 0.03
Nit - 5.0
Alk - 7.2
Sal - 1.026

 

[Just John]

Bump