Number One is dying

Emotional times, no doubt. By the end of Sunday #1 started showing all too familiar signs of over-watering. Since a few days ago it started to have a brown line on the under side of the green leaves and Sunday afternoon it started to lean on its side. In just a few hours it's now lying completely on ground:

As a response to this event I added an oscillating fan in hopes of removing some water from the top level of soil. I also setup a de-humidifier to keep the humidity at 60%.