Answer: Dry air and/or under-watering can cause crispy brown leaf tips. You can try misting the plant or setting it on a pebble filled tray in which you keep an inch or so of water. As the water evaporates it will increase the humdity around the plant. Be sure to water thoroughly and then allow the top half inch of soil to dry out before watering again. Once you correct these problems, the newer leaves should emerge a healthy green and remain that way until they are replaced by the plant. Best wishes with your philodendron!
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