Dino identification

[wagadodo]

Need some help identifying these. Here they are under a microscope. In the tank they resemble a snotty and stringy but don’t have any bubbles like dinos sometimes do and they’re smothering corals.

I’ve put the tank on a 3 days black out and dosed nitrate and phosphate after I done a hefty water change last week.

 

[Lavey29]

https://www.reef2reef.com/attachments/dinoflagellateid12_12_2019-pdf.1324729/