Weird algae maybe?

[colesjensen]

Can someone id this. I kinda looks like coralline but I'm not sure (the orange circle)

 

[Reefing Madness]

Green Dust Algae

 

[jsker]

Spirobis Link harmless. scrape them off the glass

 

[cloak]

I'm not really seeing an orange circle, but that olive green one could very well be Coralline algae. You might want to use a brush and see if it will come off easily.