Dinoflagellate identification

[trmiv]

I suspect these are Coolia but I want to be sure.



Advice on these guys? They are bad right now just some spots on the sand. I want to get ahead of them though. I’ve been battling low nutrients so I’ve started po4 and nitrate dosing. Also stuck my green killing machine in the tank in an area that the flow will push towards the inlet.

 

[Ryan9316]

That's coolia, I'm fighting them now as well, I got rid of them for awhile with Dinox but they came back.