How to dose Kalk?

[toejam]

I am not trying to hijacking this. Its just a related question on ph.

I have 300 total gallons.

 

[subielover]

So if i add kalk to my ro bin do I need a pump in there to keep it mixed up?

I have one in mine, but it does not run constantly. I turn it on when adding new water and kalk powder. I let it run for about half an hour, then let it settle for another half an hour, then turn the ato back on. HTH