Snappy parameters

[Delphinus]

I didn't see anything that resembled a dinos bloom, so I'm still hoping that's not what you have.

Here is some reading I was able to dig up.
http://www.reefs.org/library/article/t_crail.html
http://www.reefkeeping.com/issues/2005-05/eb/index.php

Also if you do a search on "dinoflagellates" or "dinos" you should get some reading, several folks on Canreef have been through this. I've suffered dinos blooms twice -- the first time I was able to knock it under control by starving the system of light for as long as I could stand (my goal was to make it a week, but I got impatient). The second time, starving the system of light didn't really work, but then I moved and the tank was so badly disturbed that the dinos just kind of went away on their own.

I really, really hope this is not what you have.