hey if you'll take pics even of the pre testing/preps portion we'll link them here, need fresh updates
https://www.reef2reef.com/threads/reef2reef-pest-algae-challenge-thread-hydrogen-peroxide.187042/
on reefcentral peroxide threads in about 2012 I wiped a few diff tanks totally clean of just that same kind of macro, w before n after pics still there
its susceptible yep/going off old pics lets see how those tests turn out. even if its not the major used item, any increment of invader response to peroxide we just love to catalogue
because your tank is accessible, if that was my scape Id be fixing it outside of the tank and basically never exposing the frags to the peroxide though they're all pretty tolerant strains of sps. the big risk isn't the kill; I can tell from pics that's going to die even with light peroxide testing...its the regrowth
if you find that your lightest-treated test rock just dies free and stays that way, then we know the work involved in tank parting w be worth it.
here's that old rc thread
http://www.reefcentral.com/forums/showthread.php?t=2082359
your examples are somewhere in the first third ha/long thread. many cures, and that was the rough evolution days before we did pre testing. evolution of peroxide in the reef tank right there. I have never in all my reefing life been shown a trick as decisive as peroxide dosing, it literally saved my tank from loss years ago. no matter what they invent for algae, it will never cover the breadth that peroxide does. we had to claw tooth and elbow in this hobby to get it accepted as legit.
your invader is of the class/requisite hitchhiker
its not possible to dose nutrients to someones tank and generate the algae you have, unless that's been directly brought in...what that means strategically is that nutrients didn't cause your issue, so we shouldn't battle it with nutrients. we want its cells killed, and from that point you can't have growback if you are quarantining new additions.
by classing an invader on how they got in, we know where to use nutrient stripping and where not to. Its good to use nutrients against the limited invaders that bloom when we spike nutrients across 5 different tanks. your cyanos, your GHA's etc, the commoner ones.