Yes, I read that before.. hence I asked do you run UV.. UV helps in more than 1 ways in helping keep the reefs disease free.. but if you don’t run UV, I will be surprised if this medicine worked for you.. when people say certain medications worked for them and certain people claim it didn’t, the reason is mostly because there setups aren’t the same.. I have also seen videos about H2O2 dosing in display tank by humble fish IIRC.. I actually used it while practicing tank transfer on my blue tang, but no 1st hand experience in display.. as you rightly said, it may not be the magic bullet, but like every medication in the market today (even Ich-X and Rid- Ich have some positive reviews on different forums), it might help certain individuals given their different setups, different stages of the outbreak etc.. I am honestly glad whatever it was, it actually worked for you