Stringy Algae, Dino’s, or cyano(no bubbles)???

[dommythaGOAT]

Does anyone have an idea what this could be? I have had them pop up on the past and I thought it was Dino’s, but it disappeared for a while and now has made its way back, but now more than ever. Should I dose vibrant? Thank you!

 

[vetteguy53081]

Looks like flagellates - not Dino flagellates
Can you post pics under white lighting?

 

[dommythaGOAT]

Looks like flagellates - not Dino flagellates
Can you post pics under white lighting?

Here are a few photos under only white light. Thanks for the input!