It is a common misconception among reefers that administering NaCl free salt is primarily supposed to replenish trace elements. The main task of Sodium Chloride free salt is to maintain ionic balance of aquarium water. NaCl free salt is one of the most important components of the Balling method, and it plays a significant role when Calcium Chloride and Sodium Bicarbonate supplementation is in place. The use of NaCl free salt is not so common any more, and application of the Balling method is often limited to 2 or sometimes 3 of its main components. This approach will probably not cause any problems for several weeks or even months, but in the meantime the chemical reactions that take place in the marine aquarium will lead to a deficit of trace elements.