Anyone running a Ca reactor only

[power boat jim]

I just got a Geo 624 reactor and I a now hope full to not have to dose anything. I was wondering if anyone else has upgraded to a large reactor and was able to do away with dosing. After only a few hours its putting out an alk of 12.6 at flow rate about double the old one.

 

[shifty51008]

With a properly sized cr you shouldnt have to dose anything except mag once in a while. But i know some run kalk also just to keep their pH up