Hi Ld Di:
If you go back up the thread to read ML's answer to me, he said that the 100 tons to 1 acre was done just once to prove that it could be done. His advice to me was to go slow. Below is his advice to invincible:
For 250 sq feet of garden you may use the following amounts:
Ground Limestone(Calacitic), which is Limestone which is high in Calcium--12#-24#
Ground Granite or rock of similar make up--6#-12#
Best to mix these together before time and then spread them on the ground and work in to top soil !
But "IF" you are going to container garden then you want this amount then mixed with the same total amount of soil, so that you have a much more concentrated soil to grow more in a smaller space!