Besides calcium and strontium, some coral and coralline red algae also store magnesium in their skeleton. It is biochemically directly involved in the photosynthesis of algae, i.e. the conversion of carbon dioxide and light into organic compounds. Magnesium is therefore one of the most important minerals of seawater.

Tropic Marin® Bio-Magnesium provides magnesium and carbon dioxide in a biologically optimally usable form, preventing magnesium deficiency in seawater and restoring the natural concentration ratio of the alkaline earth metals. These are basic requirements for a healthy coral reef in the aquarium.

• For biologically ideal magnesium supply in crystalline form in the reef aquarium

• Provides magnesium for strong skeletal growth of coral and coralline red  algae

• Provides carbon dioxide for the zooxanthellae to support photosynthesis and calcification  

• The natural ionic composition and the pH of the water are not changed

• Without unnatural by-products

• Without phosphates and nitrates

• Exact dosing and easy application