It's normal for torch corals to close up once and a while. Not for extended periods and it isn't normal for the tissue to recede as it appears in the picture. It's especially not normal for a torch to die, they are about as bullet proof as you can get. Dips in FW and H2O2 sound extremely extreme LOL. Even mild dips in lugols and CoralRX etc.. don't always go well with Euphyllia. I was curious to see about this H2O2 FW dip and this is the first thing that came up in a google search LOL: Hydrogen Peroxide Equals Torch Death Water changes have always worked fine for me, in over 10 years I've never lost a Euphyllia. They are really tough if they have a good enviorment just my .02.