I have a plant that has been yellowing, starting in the veins then working out. Bottom leaves are being affected first and moving up the plant. It went through a bit of a dry spell right after Christmas, then got over-watered when my mother in law was visiting last week (such a help!). I have only had it for a couple months, never fertilized. The water here is extremely hard, not sure if that would affect it. None of my other plants seem to be having the same problem, but they're all pretty durable. I think this one might be a bit more sensitive.
Any thoughts on the cause, and especially on solutions??