You know I have tried almost ever salt there is. I have not tried this one but I am so satisfied with oceanic, I will not change till I have too. It dissolves completly. All of it. It uses less to get my saliinity to where I want it than any other brand. So it lasts longer. Also, the calcium is outstanding. Always at least 400, if not 500. Melous uses it. If that says anything.