Magnesium is required by all organisms in small amounts. Some group such as calcareous red algae and gorgonians take it up in increased amounts, so magnesium deficiency may occur in some aquariums. The most important property of magnesium in marine aquariums is to serve as a calcium precipitation inhibitor. This means that if there is not enough magnesium in the water, calcium will quickly precipitate as calcium carbonate and will no longer be available to the corals in the optimal concentration. Even large amounts of calcium addition cannot raise the concentration as long as magnesium is missing. - If magnsium concentrations are too low, aragonite may convert more rapidly to calcite.
There are a few ways to raise the magnesium concentration in a marine aquarium:
- Calcium reactor with magnesium stage
- liquid or powder magnesium products
Make sure that any change should always be done slowly.
Optimal magnesium levels in the marine aquarium: 1250...1350 mg/l at 35 PSU.
The natural concentration is around 1300 mg/l.
Magnesium stage for Turbo Chalk Reactors made of PMMA
Magnesium Reactor 110 up to 1000 litres
Magnesium / GH-plus
Super Magnesium