Coral Reef Research, Inc. (Natureef) Hardness Plus

The NatuReef® Alkalinity Plus and Hardness Plus provide 9,500 mequ. of alkalinity and almost 200,000 mg of calcium hardness per gallon. Along with these major anions and cations are also chlorides, sodium, sulfates, borates, lithium, magnesium, bromides, fluorides, bicarbonates, strontium, potassium and barium. All the elements are in proportion so they will not alter the chemical ratios in seawater. Only a slight increase in salinity may be experienced if there is little skimmer effluent waste.