Magnesium is present in natural sea water in a...
Magnesium is present in natural sea water in a fairly high concentration (1350 - 1500 mg/L) and is an essential element of chlorophyll which is necessary for photosynthesis. Without photosynthesis plants, algae and coral would not be able to survive.
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Salifert Magnesium Profi-Test
Keep out of reach of children. Not for consumption.
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