I am experiencing a plague of holes in the leaves of many of my
phaleanopsis. Can't see any visible cause
but the problem starts as lighter than normal spots .....always on the new
or younger leaves.
These spots later turn into actual holes.
I've sprayed with neem oil and fungicide but the spots seem to still be
appearing.
Insect, disease, mite or slug? I can't see any hint of a predator. What
advice do you have?

George