Hi, can someone tell me why my peace lily leaves are turning yellow? Am I over watering? Usually I wait till I see the leaves kind of wilting then I water. But last week I noticed they were turning brown, so I asked someone at a local flower nursery and they said that I should maybe add a little more water in between seeing the leaves wilting. Anyway, I tried that and noticed the leaves turning yellow. I would appreciate any know how from someone who has had some experience or knows about peace lilies. Thanks