Merk. My soil media is muck. Muddy, waterlogged, muck, straight peat moss. Kept that way everyday. What caused the problem, whether insect or fungus, can come in the plants you buy anytime. We can only attempt to control it. I hear all kinds of stuff about dryer plants versus wetter, who gets more disease than whom, and why fungus only does this or that in some situations. In the end, your own developed instincts can make or break the survivability of your plant. My plants are soaked all the time, and they look great! Have you seen their pics??