Green bacteria on sand vef ID

[Smallslandreefer]

Please help me id this bacteria on my sand bed and any experience on eradication

 

[Smallslandreefer]

Under microscope

 

[ISpeakForTheSeas]

I'm no good at microalgae microscope ID's yet, but maybe @taricha would have an idea for you.

 

[Smallslandreefer]

I'm no good at microalgae microscope ID's yet, but maybe @taricha would have an idea for you.

Thank you for assisting

 

[taricha]

Sorry, saw the other thread first and said there, I do think it's a form of cyano.

 

[Smallslandreefer]

Sorry, saw the other thread first and said there, I do think it's a form of cyano.

Do you have any speculation on what type of cyano might this be