Algae fix marine worked wonders on removing HA from my tank unless it looks like this.
It also killed my cheato but spared my Neomeris annulata, sawblade and my mangroves seem to be doing fine. It also seemed to work on a small patch of cyanobacteria that showed up once the HA was gone. It didn't touch my outbreak of bubble algae or this red stuff
This stuff seems to be happy too which I wish it would die
I also did not turn off my protein skimmer.