What is this?? Please help!

[Mojo Reefer]

at first I was excited when my rock started to have lime green and pink spots..thinking it was the start of Coraline Algae (added a bottle of purple helix about 1.5 months ago) but they’ve grown into what looks like something different that I can’t identify. Should I be worried about this algae?

Attached are some pictures. Thank you very much!!

 

[Dennis McGrath]

Looks like cyano to me.