Wiegandt magnesiumchlorid-hexahydrat 5kg
Using this method, magnesium and carbonate hardness are added by adding hw-magnesium chloride hexahydrate (MgCl 2 · 6H 2 O) and hw-sodium bicarbonate (NaHCO 3 ) to the aquarium water.
As excess "by-product", both Cl (chloride) and Na (sodium) remain behind and sodium chloride (NaCl) = saline is formed.
Although NaCl is one of the main constituents in seawater, an ever increasing and steadily increasing concentration of NaCl would ultimately lead to a falsification of the seawater composition.
The sum of all now present again elements then return in the final sum of a "natural" sea water.
When using this method, however, gradually increases the sea water density or salinity in the aquarium. For this reason, special attention should always be paid to the density or salinity of the aquarium water, and these should be checked regularly with the help of a hw density meter . A corresponding compensation can then be created at the next change of water by adding fresh water.