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Iron is vital for photosynthesis
preventing dead spots
Suitable for various user expertise levels with tailored instructions
reduced waste
Salifert Liquid Magnesium 250ml - 6027 Monthly_Promo Iron is vital for photosynthesisMagnesium is present in natural sea water in fairly high concentrations (1350 1500 mg l). Magnesium is an essential part of chlorophyll, which is necessary for photosynthesis. Without photosynthesis algae and hence the corals, which we have in our aquariums, would not survive. Magnesium also has another important function in that it allows maintaining the correct combination of calcium concentration and alkalinity or carbonate hardness possible.