I was given this phalaenopsis or moth orchid a few years ago but lately have perhaps unwillingly mistreated it. I've never fertilised it except by watering it with aquarium water, never removed the stems after flowering, and never removed dead roots. Worse after I left it outside for some rain, I brought it back inside and didn't notice the butterfly egg which hatched leading to the two fenestrations on the newest leaf. I also left it on the window sill in full sun resulting in leaf burn ( the white patches).
Should I remove any of the yellowed, burnt and eaten leaves?