Dino ID help please

[Subarody]

Sorry to post this but I need help with ID of these Dino’s. They’ve been around for a little over a year wit some ebbs and flows in population. I’ve tried raising nutrients and have a successful GHA outbreak that the Dino’s seem to coat. The first 2 photos were taken from a sample off the GHA on the rocks which have lots of bubbles. The last 2 photos are from the sand bed and have more of a diatom appearance with no bubbles. Any thoughts would be appreciated. I plan on making a concerted effort to get rid of the Dino’s and hopefully get my corals back in shape. Thanks.

 

[Lavey29]

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

 

[taricha]

first two are large cell amphidinium, last two are ostreopsis.

 

[Subarody]

first two are large cell amphidinium, last two are ostreopsis.

Thanks. I wasn’t sure if the last ones could be Prorocentrum. I’m waiting on a new bulb for my hang on UV sterilizer.