A highly concentrated, fast dissolving powder which increases alkalinity (carbonate hardness) and stabilises the pH at the correct value. In these ways it contributes significantly to the health of all aquarium inhabitants including corals, coralline algae and fish. You will find Corals need high KH..
A too low magnesium concentration results in problems maintaining correct calcium and alkalinity levels. Correct alkalinity and correct calcium levels are beneficial for coral growth. Magnesium Powder from Salifert is highly concentrated and will not only increase the magnesium concentration but wil..