Scuzy, I should have listened to you on avoiding the Dino-x... But I had already bought it and didn't want to just throw $50 away. Two weeks in I lost both cleaner shrimp, one Bangaii went carpet surfing. Two of my SPS died completely and most of my others have either locally or largely STN'd. DINO-X IS BAD NEWS!
So now I'm planning to go the next route you tried, Kent Tech M. This Bryopsis is taking over my tank and I'm about where you are, fix it or just nuke and start over.
My plan is to raise 100ppm per day until I hit 1900ppm -2000ppm, maintain until the Bryopsis is totally dead, then let it drop naturally. I've read a few dozen threads on treatment and it sounds like one issue which pops up (if it works) is a big nutrient swing when the Bryopsis starts dying off. So I plan to run Carbon/GFO during treatment, swapping it out once per week. I've also read that water changes might also be good during treatment, dosing up your change water with Tech M to equal tank levels. My theory is that the coral issues people have seen during treatment (bleaching) are as a result of the Bryopsis die off and nutrient swing rather than the Kent Tech M itself.
How long did you maintain at 1800ppm for?