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Increases calcium content of seawater aquarium (500 ml)
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Calcium is the most important mineral in seawater and is vital for healthy and steady growth of corals and invertebrates.
The optimal calcium content is between 410 and 440 mg/l.
Calcium levels can drop very quickly and is regularly tested weekly with Colombo Marine Calcium test.
Colombo Marine Calcium + can be used in a safe and simple way.
Calcium plus and Magnesium plus contain ingredients; which are harvested from natural seawater by means of solar evaporation. This offers large advantages compared to products that use chemical or mined ingredients.
1 ml to 5 liters of sea water increases the calcium level of 35 mg/l.
If necessary repeating the next day.