Damage on Phalaenopsis leafs - what could it be and how to cure it?

[Orchid126]

You might consider straight hydrogen peroxide for the bacteria infection, and/or triple antibiotic from the drug store. Be sure to treat the medium at the same time.

When you repot the plant, put packing peanuts in the center, not medium. The medium will stay wet because there aren't enough roots to use the water. The packing peanuts will stay dry.