Reef Endurance Calcium Chloride is a pharmaceutical-based aquarium supplement that mixes crystal clear with no unwanted impurities. Maintaining calcium within a range of 412-450ppm in reef aquaria will enable corals and other reef-building invertebrates to proliferate. For best results, use in conjunction with Reef Endurance Sodium bicarbonate or Soda Ash as a two-part balanced regimen.
One liter of RO/DI + 0.1 kg (100 g) of Calcium Chloride will create a stock solution with a calcium concentration of 100 g/L.
Note: As an alternative, add three tablespoons of Magnesium Chloride to help maintain magnesium levels.
1 mL of Calcium Chloride stock solution will raise calcium by approximately 10 ppm in 1 USG. Increasing calcium by more than 50 ppm per day is not recommended.
Tip: If you have issues raising your calcium levels, ensure your aquarium magnesium level is between 1200 and 1350 ppm.