How to raise calcium

[Zos4me]

My calcium is only at 200 how do i raise it

 

[Randy Holmes-Farley Verified Community Expert]

My calcium is only at 200 how do i raise it

sounds pretty unlikely. I suspect it is a measurement problem of some sort.

Try the same kit on some new salt water of known salinity.

 

[Zos4me]

Ok I will thanks