... 1)Fast dissolving. 2)Phosphate-free 3)Nitrate-free 6.7 KG Marine Aquarium Coral Reef Sea ... elements founded in natural coral reefs seawater, such as calcium(Ca), magnesium(Mg), iodine(I), strontium(Sr), ... Cs), cobalt(Co), boron(B), Vanadium(V) and water-soluble B1, B12,etc..2.Blue Treasure sea salt has ... salt dissolved in 28.5 liters of fresh water until the salt completely dissolved. At a temperature ...