Spathiphyllums like a lot of water, some people grow them in shallow water. Shade, water, humidity and high temperatures won't worry them. Take away the water/humidity and they'll go down hill. I've got one of the larger ones in the garden in a shady spot. Grew well for years and then a fungus attacked it and it went down hill fast. Thought I'd lost it. There was only a bit of a stub and a few tiny leaves for a couple of years. But over the past year it's started to make a big come back. Still not as big as its former self but it seems to have developed a resistance and thrown off the fungus. Never thought a plant could do that. But I had the same thing happen with some Crinums too. With a bit of TLC yours should be back to their former glory in no time.
