Although sun damage is the most common cause of brown leaves on succulent plants, there are many other reasons for discoloration. Remove the burnt leaves, and move the plant to a shadier spot for a few weeks. If you notice that the lower leaves of your plant are falling off, it may be because they have different layers. Tokyo suns are star-shaped flowers that bloom in summer. They stay vibrant year-round, but fade to a lime green color if they don’t get enough sunlight. Add a small amount of fertilizer in the spring to encourage flowering.

Others have successfully planted Kalanchoe Delagoensis "Chandelier Plant" in the same container as other succulents. The nutrients in your String of Pearls could have already effected by all the watering, especially if they've been in the same pot for more than one year. I know that I have been guilty of not paying enough attention and ignoring this very important plant. Sunburn or sun damage is the main reason String of Bananas go brown. String of Pearls that are younger and less well-established need more water than mature plants.