KH extremely high


KH in tower 1 for the last week -

Hi all, I noticed on our monitoring page that KH is extremely high. This change occurred after our massive water changes so I looked up the values on Waternet, it looks like our water is very hard. Or am I wrong?

Waterstof carbonaat = bicarbonate, which influence KH, isn't it?

This is the doc:

I read some articles and it turns out high KH isn't too bad, especially because nitrifying bacteria use it. It will probably lower by itself. The only issue with these high values is, pH will be almost impossible to lower. So our system won't be optimal for some time. So be it. I guess...