You're barely over a month into the fight. I wouldn't call that ineffective, I'd call it you not giving it enough time. Not saying it that way to be rude, but cleaning up major outbreaks take time, outside of extremely aggressive tactics. If you want it gone in a day, pull all the rock and wash it peroxide, just the 3% stuff works fine. Don't get it on the corals though, outside of zoas I don't think they handle it well. Literally pour it over the rocks, and scrub them down. Then rescape. It will kill it fast. But be ready to continue to clean them, along with aggressive methods of nutrient control, which, based on time line you gave earlier you didn't keep up with after the Reef flux dosing. Otherwise, it is slow and steady, manage nutrients, manually remove, let the CUC work.