its not a very good picture, it really dose look like a 3year olds nose blew up on my rock. [lol] I googled some pics of dinoflagellates but its not really what it looks like, the pics i got were very thin algae, this is thick, ties itself together if you will, and it doesn't subside at night.
thank you for the help with the diatom though, will get on that shortly.