Phalaenopsis Leaf Burn or Rot?

[Kezyma]

Hi folks, not really sure what to do woth this one! It was in a sport with a couple of others that all got leaf burn, I moved them as soon as I noticed it, the others dried and look like normal leaf burn, but this turned a grey colour and the yellowing has spread quite quickly and seems to go all the way into the crown at this point!

Any ideas what it is and more importantly, what I should do to keep this one going?

[WhiteRabbit]

It looks badly burned to me.

[estación seca]

Treat it well and it should recover. The burned leaf will die.

[jrguevar]

With sterile and sharp tools cut off that leaf, check the center of the crown to see if it has spread towards the inside of the plant. Remember to seal all cuts with a fungicide or cinnamon powder at least

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