After a few years of growing the succulent, you will likely lose some leaves. Did this post help to identify what's going on with your succulent leaf leaves? It is important to wait for the soil's drying before watering it again. Water the Ariocarpus only after it is completely dry. Ariocarpus can only be grown in soil designed for cacti. These succulents need to be exposed to the sun. They require little water and a full sun or light shade. A shade cloth or moving the plants away from the sun during the hottest parts of the day would be a good idea.