DRL reef crystal salt

DRL REEF CRYSTAL SALT is a chemically sound blend of salts designed to stimulate natural reef waters. Ideal for fish only and invertebrates. Formulated to maintain ideal and stable natural seawater concentrations of magnesium, calcium, and strontium with adequate alkalinity, and pH for closed aquarium systems. Contains all major, minor and trace elements found in natural reef waters but contains no nitrates, phosphate, silicates or arsenic. Mix correct amount of salt with dechlorinated tap or purified water.Stir well to ensure a good mix. Although the solution may be used immediately, it is suggested aerating the water until it achieves oxygen/carbon dioxide equilibrium. Measure specific gravity. Recommended range is 1.020 - 1.023 at 75 degrees F. Change 25% of aquarium water every 2-4 weeks (or as necessary) to maintain optimum water quality.