While it's good you got over the GHA bloom, this advice is so vague. You tried 8 different things in the course of the few months. How do we know what worked and what didn't? How do you know the tank didn't just mature past the bloom on its own? It isn't really repeatable.
For example: I have no GHA in my display despite not doing any of these things except that I've never used vibrant or anything and I managed cyano blooms with manual cleaning.
-I run my lights very white so there's a lot of red in there. Probably far more red than you ever had.
-Mag is not elevated
-Haven't ever tested phosphate but nitrates have been everywhere from 2-250ppm over the lifetime of the tank currently in the 20s
-Water temp goes between 75 and 82 seasonally
-No UV
-No skimmer to clean
-Had chaeto to reduce nutrients, didn't notice a difference when added or when removed.
edit: there is a tiny patch of GHA on a return nozzle that I recently 3d printed. Maybe it's just not "cured" like the rock is since it's new?
