Soil conditions can greatly affect the stability of an aluminum fence. In Jacksonville, FL, its important to consider factors such as soil composition (sandiness or clay content), moisture level (which can affect post footing), and potential for erosion or shifting ground. A deep enough post hole should be dug (typically about 2 feet deep) and filled with concrete to anchor each post securely. For areas with high winds or unstable soil, additional depth or reinforcement may be necessary. Consulting a professional installer who understands local soil conditions is recommended for ensuring a long-lasting installation.