new topic of Cal And KH test to high

I used to keep my calcium level at 500.Then I started adding a lot of SPS,and now I count myself lucky to get it to 350.
 
They also cost a little over double the price as the tunze.
Would be nice to have the motor outside the tank though.
 
The API test always read higher Calcium that's why I got the better test. Them drops are just not consistent is size.
 
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