I have a ponytail tree plant. The new growth look anemic, pale and thin. And several leave have browned from the midway to the ends of the leaves. The stem is woody and firm. Though it is in a solid pot, the soil tests dry, and there seems to be reasonable space for root growth. I have just moved it so it can get eastern morning sun for several hours. I have tested the pH of the soil and it tested to be a pH of 4.0. Can someone help me diagnose and treat my plant.