I would say that they work together instaed of aginst each other. True that when one is low the other will probably be high, not only
Ca and
alk has to be balanced magnesuin also need to be in balance, otherwise you cant raise the
ca.
Ca 400-450
Alk 7-10 dKh
Mg 1250-1450
What are your current readings?
EDIT:
Here is a great program, Aqua Calculator. The site is in german, but dont worry the prog is multilingual. Just hit the downloadbutton and install.
Aqua-Calculator
