Cyano and coralline algae

[AdamG280]

I’m getting some green cyano which I’m scraping off the sides and I used a tiny bit of hydrogen peroxide. I don’t want to kill any possible coralline algae that will be developing in the next several weeks. Should I stop the peroxide and do you have any recommendations? Thanks!

 

[Mr. Mojo Rising]

Can you post some pictures please, in white light? I think first is to identify what this algae is, green cyano is very uncommon and algae's are often misidentified.