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Increases content magnesium in seawater aquarium (500 ml)
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The optimal magnesium content in seawater is between 1250 - 1300 mg/l.
The magnesium comes from natural seawater and is hence pure and unpolloted.
Colombo Marine 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.
Dosage: 1 ml per 5 litres to increase the magnesium content with 10 mg/l.
When needed repeat the next day.
Test the magnesium content weekly with a Colombo Marine Magnesium test.