Salifert Coral Calcium 500 ml.

Calcium is a major constituent of calcareous algae, skeletal material of hard corals and the skeletal needles of soft/leather corals.
Calcium also fulfils many biological functions. These processes result in depletion of calcium. Quite often a too low calcium concentration retards growth of corals and calcareous algae.
NSW (Natural Sea Water) contains 400 - 450 mg/L calcium.
This is also the value we should strive for. For a stable aquarium environment the fluctuation in calcium content should not be more than approx. 15 mg/L.
Each liter contains approx. 160,000 mg of calcium. You will appreciate this when you consider that an average aquarium depletes 5-8 mg of calcium per liter, each week.
To avoid an ionic imbalance, we properly balance the calcium with ions such as sulfate, chloride, bromide, sodium and magnesium.
All ingredients are of a pharmaceutical quality or even better. This ensures that no unwanted elements are added to your valuable aquarium. Right after you have dosed this supplement the calcium is immediately for the full 100% available to your corals and other calcium requiring organisms.

Directions:
Shake before use.
Regular maintenance:Dose 5 ml per 100 liters (25 gallons) once a week or two weeks.
Adjust dosage according to individual requirements (use a calcium test, e.g., Salifert?s Calcium Profi-Test). Every 5 ml per 100 liters (25 gallons) will increase the calcium concentration by approx. 8 mg/L (8 ppm).
Never increase the calcium concentration by more than 50 mg/L a day. Maintain a calcium concentration of 400 - 450 mg/L.