My two pitchers were doing fine for months with the amount of water they were getting but they weren't producing pitchers so I got a humidifier. Now they have some browning leaves as if they are over watered. I know the humidifier is necessary because the air is very dry and now most of the leaves appear healthier. They are both in containers with holes in the bottom so I know they are not sitting in water. And the first plant has leaves dying in the middle of the stem rather than at the bottom?