... and microelements. 2)Free Nitrate/Phosphate 3)Food Grade raw material Blue Treasure Food Grade Artificial Sea Salt 1.The Blue Treasure sea ... trace elements founded in natural coral reefs seawater, such as calcium(Ca), magnesium(Mg), iodine(I), strontium(Sr), molybdenum(Mo), ... Blue Treasure synthetic sea salts are selected from pure, food grade and contains all kinds of trace elements, in accordance ...