yes it got my first reef too. too bad we didn't know about peroxide back then, its a literal cure for all red algae variants even invasive macro algae. It is not possible to have red brush algae problems any longer now that we know the cure, its too simple to beat, its not even a thought any longer. we cured about 500 tanks so far of various ruffians in this big rc thread about it pico reef pest algae problem challenge - Reef Central Online Community
I never knew stop aiptasia worked for it that's neat.
Since this species of algae is an obligate hitchhiker, once you kill the entire mass out of the rockwork it can't come back. But i agree its got nasty holdfasts and will regrow until all mass
can be eradicated
I got it all out of my tank over a year ago but the difference is my tiny pico reef is easy to cover all areas on a drain and treat and these larger tanks have much more ground to cover.