Having tried Red Sea coral pro salt before I decided to go ahead and try this reef salt. First, both products are made in Israel which is awfully suspicious if you ask us. Even still this salt smells, dissolves, and leaves residue in container just like Red Sea Coral Pro sea salt. At about $65 a large pail we wonder why this is so expensive other then having to import it into the United States? We did however like the high Potassium and Calcium levels found in H20 Ocean pro salt. At least the name says it all right?