Tiny Dino ID please

[jjb]

Hello. I've been fighting what I think are ostreopsis and amphidinium for well over a year now. Things have been looking ok for the last couple of weeks between blooms but now I have these guys blooming on the glass, they're much smaller, those are the big dinos (Amphidinium?) in the background.

Anyone know what kind these are?

 

[Ron Reefman]

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