Id please

[BigYD]

Hi, I thought I had dinoflagellates in my tank till yesterday when I got my microscope and what I saw doesn’t look like dinoflagellates. some help

 

[taricha]

The larger strands in pic 5 are gha filaments. The other smaller strands in the pics look cyano-sized, but not enough detail to say for sure.
I'd say this growth overall is mostly held together by cyano.