Diatoms?

[Mickey]

Can someone @taricha confirm if this photo shows diatoms? I know there's some cyano here as well. If not diatoms, any idea what?

 

[Reefahholic]

Can someone @taricha confirm if this photo shows diatoms? I know there's some cyano here as well. If not diatoms, any idea what?

It’s diatoms.

 

[Mickey]

Thx. Just wanted to be sure.