What are these yellow/tan/black marks on the leaves?
If you see in the photo I uploaded, there are these yellow/tan marks on the leaves - they're actually engraved on the leaves. I can feel a "ditch" or "grooves" when i rub them. Where do they come from?
Also, there are black marks, but they don't exactly feel physically different than the normal part of the leaf. What are these marks?
I'm wondering if it's stressed from overgrown roots/needing to be repotted or if it's coming from the rubbing alcohol I use to wipe off the scale. Could it be from being in the office? Thoughts?