Dino ID please microscope results?

[Greenstarfish03]

Not the greatest pictures but i hope we can id this. As of now I have a minor issue mainly on the sand but i want to nip this before it gets bad. Im thinking its some type of prorocentrum but Im not sure.

 

[35ppt]

Ostreopsis I think.

 

[taricha]

Yep.

(For future reference, here's a dino ID guide.)
https://www.reef2reef.com/threads/dinoflagellate-identification-guide.671466/

 

[Greenstarfish03]

Here is a quick video as well. What makes u think its Ostreopsis. I have a hard time telling for sure looking at the guide. In my tank i see a light brown red dust on the sand. Not reall heavy but it does get heavier as the day goes on and less in the morning. I do see some on the rocks here and there but its hard to even see on thr rocks. I dont see any bubbles or stringy goo. It came after treating the tank with vibrant for a medium case if bubble algae. The bubble algae is totaly gone, but this showed up.

 

[Greenstarfish03]

Ok my video wont attach for some reason. Says the upload file was not a video, but its clearly a mp4 video.

 

[dwest]

Here is a quick video as well. What makes u think its Ostreopsis. I have a hard time telling for sure looking at the guide. In my tank i see a light brown red dust on the sand. Not reall heavy but it does get heavier as the day goes on and less in the morning. I do see some on the rocks here and there but its hard to even see on thr rocks. I dont see any bubbles or stringy goo. It came after treating the tank with vibrant for a medium case if bubble algae. The bubble algae is totaly gone, but this showed up.

The sesame seed shape of Ostreopsis is the give away.

 

[Greenstarfish03]