I have plenty of clay and acidity here too. Would love to get the pH level up to 7 and keep it there. 4 tons of lime in 1 1/2 acres last year barely made a dent. May try again this year. Our water shed comes through a hemlock and pine forrest on top of the acid rain here in the east so it is a constant battle as we have had large volumes of run off over teh past 12 months due to a heavy tropical storm season last summer.