Oh nooooo! (Phalaenopsis might not make it due to rot)

[Roberta]

The dark patches in the crown point to crown rot. Sometimes when a Phal loses the crown, it will grow a basal keiki if it has a good root system, But after lopping off the roots (I see some that look like they were good before they were cut off) and using peroxide on roots - that destroys root hairs, I doubt very much that it will survive.

Question, why would you stop watering if it lost old leaves? This is not a nobile Dendrobium that loses leaves when it's time for dormancy. Phals need water all the time. But if it seems to have problems, taking it out of the pot and having a look is good. Cutting off parts is not good. With crown rot, usually that's curtains. But at least, give it a chance! (A few drops of peroxide in the crown probably does no harm, but likely doesn't do any good either)