High Calcium... what could i do to fix?

[Papitto]

Hi Masa,

Tested my Ca,Mg and Kh for the past few weeks.
Ca: 500+ Salifert
Mg: 1290 Salifert
Kh: 8.7 Salifert
Ph: 8.15
SG: 1.025

Does this look normal or is Ca too high? I'm dosing Kalk in my top off bucket.

 

[459b]

That does seem a bit high
What salt are you using and how often are you doing water changed?
Dosing kalk shouldn't push Ca up that high

 

[Papitto]

That does seem a bit high
What salt are you using and how often are you doing water changed?
Dosing kalk shouldn't push Ca up that high

I'm using Blue Treasure sps. I do 50 litres WC once a month, sometimes sooner.
I just completed my WC last night. Every 7th to 9th of the month.