That is a bunch of brave souls willing to collect pics all in one place

my own tank can tolerate 35% added (most of our work shown is 3%) after being pushed for testing purposes. the point of all the excess work is finding boundaries to work within against targets. Even if you spilled straight 3% on the sps it wouldn't kill it if rinsed off.
The coral does fine rejecting it's own order of substrate colonizers it just needed a boost there as a pick remove, an animal would have zapped it in nature like a little grape
One proof regarding valonia exists
It's sole cause in reefing is non quarantine and no other cause. That opens nice boundaries, says if you eradicate the DNA it can't come back, being allowed modes independent of nutrients opens options, we choose peroxide someone else may use an ATS these are all just options to peruse
The reef central peroxide thread has some multi thousand dollar sps reefs doing full dosing, and poster Russ here documented the finest sps tank overdose and comeback I've seen. He's doing it on purpose to battle dinos
Acting on the first few spots was right move