Extending leaf damage - Do I cut off all leafs?

[King_of_orchid_growing:)]

Well...

Paphs and sometimes Phals have anthocyanin pigments on the underside of the leaves.

I did watch a documentary that talks about why there is pigmentation underneath the leaves of shade growing plants such as Paphs. The documentary states that the anthocyanin on the underside of the leaves aid in bouncing the light back up the leaf to maximize photosynthesis in an otherwise light scarce environment. Whereas if the same Paph were to grow in brighter light, the anthocyanin pigment underneath the leaf wouldn't be as concentrated as those that were growing in shadier conditions in order to allow more of the light to pass through the leaf.

Anthocyanin on the top of the leaves and along the edges of the leaf pretty much acts as sunscreen. So yeah, if you see some leaves developing a slight blush of the anthocyanin pigmentation on top of the leaves, I wouldn't grow them any brighter regardless of how dark green the leaf is.

So, there...

Connie brings up a good point about anthocyanins in general.

[Orchid126]

Have you tried wiping the underside of the leaves with a white cotton ball? If you find specs, you may have mites or other little creatures sucking the juices of the leaf from the underside.

[LuizaG]

Hi Orchid126

The leafs have been coated with Neem Oil almost all the time so any bugs should have died. Recently I topped up the neem oil using a cotton wool pad - no bugs were there.

[nenella]

Luiza, as Philip said earlier.. If the marks don't move leave alone.. also unpotting it to see if there's any mushy roots in the middle is a v. good idea as well as cutting the flowers stem. When you repot be sure to soak the bark first.
And, I also think you've done the right thing about moving the plant to less light.
keep us posted

PS: your plant does not look that 'bad' at all!