Sadly it's been a few months and it hasn't gone away on its own. If it was above water I would without a doubt say it was fungus growing on something. Even my qt without any fish just a few corals and no feeding it's growing on the sides, egg crate, everywhere. At least the qt doesn't have the red slime.
Thanks TopheReef, not sure why I didn't look at dino pics before but they look just like the pics and vids of Amphidinium I've found online.
Shawn