Petshrimp.com Discussion Forum

Hi,
What do you use for the KH measuring? I read on czech phorums, that KH measuring is very inacurate. And what is your DGh?
E.g. Water parameters of my tap waters are:
Nitrates: 10,1 mg/l
Water hardness: 2,91 mmol/l

I tried to convert these units and hardness should be 7,8 DGh.

I don´t want to ...