Good point, I look at the value of the soil after a couple of months and there would be little if any nutrition left. Adding my mix of liquids to it makes the soil act more like a filler or medium with no nutritional value. I have not been educated in horticulture, but like the gardens of babylon were grown, the rocks were just the medium as the soil would be after time. Thanks randm for your reply.....doin it with ease.