high alk and cal?

[bingus]

i just got my red sea foundation pro test kit and tested my water. I haven't been adding anything for alk or calcium and i use instant ocean sea salt which has lower readings for both of those. i just tested and i have 11.2 dkh alk and 450 ppm for calcium any reasons why?

 

[bingus]

i just got my red sea foundation pro test kit and tested my water. I haven't been adding anything for alk or calcium and i use instant ocean sea salt which has lower readings for both of those. i just tested and i have 11.2 dkh alk and 450 ppm for calcium any reasons why?

from what I've seen I want around 9 dkh and 420ppm correct? i only have a few small softie frags