What are these algaes?

[BlackZebrasoma]

So, I recently increased the Phosphate and Nitrate level of my aquarium. My phosphate is around 0.06 and my nitrate around 0.7 . Now a few days later I saw these algaes on my stones. I think these darker spots are Coralline but I’m not really sure. I really want to know if it something good or bad, so please tell me what you think

 

[vetteguy53081]

Pics are too blue to tell what we are looking at. Please retake under white lights