I have a minor issue with Dinoflagellates that I have been able to keep under control so far, but need to get rid of it completely.
I had Dino's many years ago when I was first getting into the hobby and it nearly wiped my tank out.
Because of my past experiences with Dino's I have decided to increase my dose of Prodibio Biodigest. Along with the increased dosage of bacteria I have started dosing Vodka.
I started with 0.5 ml yesterday and will follow the dosing instruction in this article: http://reefkeeping.com/issues/2008-08/nftt/
I am hoping that by feeding another form of bacteria it will out compete the Dino's for food.
Like I said, the Dino's are not that bad right now, only enough to annoy me, but they need to be wiped out before they can get a foothold.