I am dosing reef flux now. I am on week 3. I have lost two acros, and I have a Walt Disney that always had polyp extension that had none now. I have an alkatronic that automatically turns my calcium reactor off when alk gets high and it tests at least every four hours. I haven’t had any alk swing at all. My nutrients are a little bit higher than start, but nothing crazy. I have been dosing vibrant also, so I can’t say for sure it is the reef flux, but I think it is. I also lost my brittle star and two tuxedo urchins that I have had for over a year. Prior to dosing reef flux I had issues with tin in my water, I just found the source and last icp test was good, but it could be that my acros were still mad about that. Having said all that, most of my corals are fine and I would dose again in a heart beat to be rid of this Bryopsis!