Are these dinoflagellates and if so what kind?

[jeffmr4]

I've been treating these as dinoflagellates and using vibrant (which hasn't worked) and dino-x which doesn't seem to be working. I know my magnesium is somewhat low. I've shortened my lighting period to 6 hours and a few other things. Anyone know what this is? Thank you.

 

[Diesel]

Yes, it seems like whatvyou have are Dino's.
What kind is only possible to be saying when you have access to a microscope and some knowledge about what to look for.
In most cases it's just not only Dino's but algae and Cyanobacteria are mixed in there as well.