When I left for work this morning these two plants were almost identical . Then 10 hours later, I come home and see this. what could have happened? One thing I've noticedis that now the stem is all flimsy above a certain point. and bellow that point the stem is still firm and feels healthy. Two plants right beside each other and one practically dies? How could a plant become like this in mere hours?? anyone know what's wrong with it??