First, you should id the stuff under a microscope because the key to the treatment is to correctly identify the culprit.
I had 100% success killing dino with higher PH. Worked like a charm and it never returned, ever.
I used Seachem OH to raise the PH to 8.5 for a week.
http://www.aquavitro.com/products/balance.html
I took a sample of the stuff before and looked at it with the microscope before to make sure what I was dealing with and it was positive id for dino.
Diatom won't react to the same treatment, neither cyano so ID is important.