This is my story and how I beat it:
It started off when I had to hypo my display due to bad QT practices. Lesson learned, never again. I was "lucky" in that I was able to remove all of my inverts and corals. I will tell you all this - hyposalinity does not help in the slightest with dino control. At first, I thought it was just a really nasty cyano outbreak since I'd never dealt with dino's before. I started vodka dosing which only made things worse. I ran my skimmer (SRO1000 INT) as wet as I could and stopped any waterchanges...
After my hypo was over, I decided to drain and sell the 2 fish I had left that survived the QT and start over. At that time, I was still fighting the dino's so I turned off my lights altogether since there was nothing in there except rock and sand. It went through a 2 week period of lights out, then I would turn them back on to see, and the dino's would come back after a few days. I decided to go barebottom since the dino's were pretty much locked up in the sand...
Then a fellow reefer told me about a peroxide thread floating around, which I read and re-read. I thought "what the hell - I've got nothing to lose". This is how I won:
1.) Lights out - period.
2.) Started dosing peroxide at 1ml / 10 gallons of water.
3.) I sucked out the entire top (maybe 1/4" - 3/8") layer of sand and anything I could find in the rock (which was minimal).
4.) As I sucked out the water, I strained the water and returned it to the tank so I actually didn't do a water change.
5.) I added a small UV, which I don't know if it helped or not, but I like it, so I like to think it helped a little
6.) I sucked more sand and water out another time, replacing it with strained water again.
7.) after about 1-1/2 to 2 weeks, it was gone.
Now - I ended up getting a small cyano bloom afterward which the peroxide took care of.
Peroxide chief - peroxide.