Kalkwasser Saturation Level in Seawater

[Sisyphus]

I realize this is less efficient than using freshwater, but suppose one used seawater to make up a kalkwasser reserve. How much kalk per gallon to reach saturation level?

 

[Randy Holmes-Farley Verified Community Expert]

Close to none. This is never a suitable plan.

You will immediately cause precipitation of magnesium hydroxide, followed by calcium carbonate

 

[Sisyphus]

Thanks!

 

[Randy Holmes-Farley Verified Community Expert]

You're welcome.

Happy reefing. :)