JBL CalciuMarin 500g. JBL CalciuMarin is a calcium, strontium and carbonate hardness supplement for marine aquaria. JBL CalciuMarin should be added to your tank to increase the carbonate hardness (alkalinity), together with the levels of biologically-accessible calcium and strontium in the water which are vital for coral growth. JBL CalciuMarin also stabilizes the pH level. This supplement contains two components, which cross-react to avoid undesirable ion imbalances. By using JBL CalciuMarin you avoid the use of expensive calcium reactors and CO2 units. Please refer to the product guidelines for the amounts to use and the optimum frequency of use.
