Safely increase the pH of water
10 ml for 40l water increase the total alkalinity or KH (Carbonate hardness) by about 1 ° GKH.
JBL CalciuMarin should be used to increase KH and calcium in seawater.
Always test the pH-value before and after any changes are made.
It is always very important to determine the KH value, which stabilizes the pH-value in advance. With a KH under 4 °dKH the pH-value is so unstable, that the slightest increase in PH or CO2 values can lead to serious problems.