I have an aloe plant that looked crowded and the roots were coming out of the bottom. I transplanted with potting soil into a bigger pot and during so took of leaves that had black spots and looked dead. Since re-potting I have watered a few times because it has leaves that are drooping and now bent. Now I think these leaves are dead because they have black spots that are indents. The plant does have new growth in the middle so I have hope. It is on a table next to a window that gets indirect sunlight in the morning and next to a wall heater. It is about 30 degrees outside so I am concerned that is too cold. Please help I think I'm killing it.