JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser.
This product is available at our retail partners. You can also find replacement parts and outlet items in our Outlet and Parts Store.
Reef Endurance Calcium Chloride is a pharmaceutical-based aquarium supplement that mixes crystal clear with no unwanted impurities. In reef aquaria, maintaining calcium within a range of 412-450ppm 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.
1gal RO/DI + 2-1/2 Cups of Calcium Chloride
Note: As an alternative, add three tablespoons of Magnesium Chloride to help maintain magnesium levels.
1ml/gallon of Calcium Chloride Solution will raise calcium by approximately 10ppm. It is not recommended to increase calcium by more than 50ppm per day.
Tip: If you are having issues raising your calcium levels, check and ensure your aquarium magnesium level is between 1200 and 1350ppm.