Dino or diatom?

[dach]

Hi,

Just curious in getting help identifying the brown stuff growing in my tank. Not sure if diatom or Dino. I know diagnosis requires a microscope, but does it looks more like one than the other? My tailspot blenny seems to eat it, but it does look more like Dino to me.

 

[T-J]

Neither if you ask me. Possibly the start of GHA.