Seachems Cichlid Lake Salt is a chemically sound blend of salts designed to replicate the natural environment of cichlids. It contains all physiologically essential elements such as magnesium, calcium, sodium, & potassium. It does not contain harmful or unnecessary ingredients such as nitrates, phosphates, arsenic, lithium, or cadmium. Use Seachems Cichlid Trace to restore & maintain important trace elements such as iron, manganese & iodide.