Losing Massive Specimen Size Orchids

Smell your media if it smells sour or it has a bad smell to it the media is probably gone and needs to be repotted especially if you have had it for a yr and a half. It could have been in that media for 6+ months who knows. But only repot when you first see new roots coming and there are lots of videos out there. Good luck and let us know if you find out more about the leaves this is just a guess but I'm suspecting a nutrient deficiency.

I would isolate it&keep it well fed,it might be strong enough to fight it.

To the bin. It is nearly impossible to contain an orchid virus.

It’s beautiful and I would keep it too!