Trying to find out what this is from? It has burnt tips on just this one leaf- I’ve cut it off 3 times now. I took it in about a month ago- I’m not sure if it had been fertilized, I probably should do that next watering as I can’t remember if I have already. It gets enough humidity and is a few feet away from an east facing window. It’s otherwise healthy, healthy roots, no known pests and it’s putting out new healthy growth.