@Stephen_Sinnott The GSR calcium folks claim they have a propriety process that makes their Calcium have exponentially high atomic or physical energy, wherein grams of their product is equivalent to hundreds of pounds of typical soil amendment Ca. I and several of my large commercial clients played around with it for a few years with mixed results. But there were situations that it clearly worked well. In my garden I was getting penetrometer depths of 3 feet at <30 psi, and when I quit using it the ground slowly sealed back up. But it was very expensive. And it didn’t change my soil Ca test results, nor did it alleviate my sodium problems. My almond growers had no measurable changes with it.