above ground pool side wall rotted at the bottom

[alsal609]

the side wall of my pool rusted and caused a hole about 6 inches from the bottom...hole is about 2 inches in diam. this is the 3rd year in a row this happened and the pool company isnt going to replace it for me after this year. he said its from the acidity in the sand thats around the outside of the pool. the sand outside doesnt even come up along the side of the pool. any truth to that acidity stuff. i live at the jersey shore and there isnt any dirt in my yard...its all sand....thanks for your help...al