Dino Identification Needed

[FurianSurvivor]

I am having issues battling dinos and I finally got them under a microscope. Think they may be Prorocentrum? Need some help identifying and treating because I really don't want to break down the tank and I cannot remove sand bed because I have wrasses.

Equipment:
Red Sea Reefer S1000 G2 ~265 gallons
Red Sea RSK-900 protein skimmer on 24/7
40 Watt pentair UV sterilizer

Tank parameters:
Nitrates: ~1ppm
Pho: 0.32 hannah ULR checker

 

[Tuna Melt]

Might want to post this here: https://www.reef2reef.com/forums/nuisance-algae-including-bacteria.631/

The dino stickies in that forum are an odyssey but worth reading the first few pages for sure.

This is also helpful for identifying the Dino: https://www.google.com/url?sa=t&rct...pdf.1324729/&usg=AOvVaw2UrrveGfhFJwCHZzB4XO1R

I'm a fellow novice but @taricha is the resident expert!

 

[taricha]

I don't see any prorocentrum in that picture, just a couple of versions of amphidinium.