I don't know if I got all the rotting roots cause I didn't have a lot of time, therefore I couldn't remove all the soil either. I'll finish the job after school tomorrow. What else should I do? This is the second time this happened. The first time it was Walmarts fault and this time I think it's the nurseries fault cause I only watered it twice and I noticed the rotting roots a few minutes after the second watering. I also watered the plant when the soil was bone dry. WHY DOES THIS HAVE TO HAPPEN AGAIN?!!! Maybe I should have checked the roots before buying the plant.
