Tropic Marin Bio-Magnesium 450g

Tropic Marin BIO‑MAGNESIUM delivers magnesium in a biologically‑available, ionically balanced form — essential for reef aquariums. Magnesium levels in coral tanks can drop quickly through biological uptake, precipitation, and calcification by corals and algae. This supplement restores magnesium to natural seawater levels (about 1280–1300 ppm), supporting healthy skeletal growth of corals and calcareous algae, and maintaining the correct mineral balance alongside calcium. The formula also includes small amounts of other minerals, avoids phosphates and nitrates, and doesn’t disturb water pH when dosed correctly.

Dosage is simple: one level measuring spoon per 110 L typically raises magnesium by about 10 ppm; up to two spoons per 110 L per day is the maximum recommended dose, spreading evenly into circulating water and ensuring crystals dissolve fully before adding more.