[untamed]

Originally Posted by dareefguy

I just got a calcium reactor going. Only running with crushed coral at the moment. Should I discontinue the use of this aswell? I was told to use kalk at the same time as the reactor to keep my ph up.

Or would the reactor raise alk aswell? something to do with the co2 maybe?

People do use both for certain reasons, but that is the last thing you should be thinking about...The bottom line is that BOTH methods supply BOTH Ca and Alk and both have to be carefully controlled. The idea is to replace ONLY the Ca and Alk that are being used up by the tank and no more than that.

Between your two methods, you are oversupplying your tank with Ca and Alk. You need to stop both and get let those levels fall back to normal before carefully restarting in a controlled way. Don't venture to use both methods until you have a much better understanding of how it all works.

...and don't worry about what pH your tank is...