Cayano? Diatoms or Dino?

[RonSwanson]

So I had velvet. Then a fish had HLLE. Then I fed a ton to heal HLLE which helped and now I think I have cayano. Can anyone comment on what I am looking at? Stringy “fingers” samples are from dark brown/reddish samples. Circles are from snotty hair “algae” I found in between the rocks. Nutrients seem to be very low. 5ppm nitrates and 0.15 phosphates (after reef roids). Any help is appreciated. Tank is about 6 months old. Bare bottom.

 

[vetteguy53081]

Possibly fibers from hair algae or bryopsis but don’t cyano/Dino

 

[taricha]

fibers are cyano and the suspended individual cells look like chrysophytes. That's my vote anyway.