Liquid Calcium is an easy way to add the proper calcium to a reef tank with a high livestock load. It is great for novice aquarists. Liquid Calcium can be added to a tank daily or weekly without the risk of increasing pH too abruptly. It's high concentration of high-grade calcium chloride enable this product to help tanks attain the correct calcium concentration, like that in seawater: 425-450 ppt. Many times, aquarists using kalkwasser dosing systems/reactors will also use Liquid Calcium as a way to reach that optimum level for a heavily stocked aquarium more quickly than by their regular slow dosing system.
Directions: Shake well before using. Add 1 to 5 ml (¼ to 1 tsp) per 50 gallons of aquarium water each day. Different reef systems have different calcium needs. To determine the calcium usage of your system, monitor calcium demand by testing aquarium water daily for about a week and replacing the amount of calcium that is being used.