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Discussion Starter · #1 ·
I've been asking around at dealers, manufactorers and the lot.

It seems that I can only get generel TDS-meters, salinity-testers and conventional KH-testkits only read the level of calciumcarbonates.

Actual problem:
When I mix RO-water and tap-water to a Kh-level of 3, the other parameters are exactly where I want them. But Kh 3 is too low for my desire, so I add Na2HCO3 or NaCO3 to raise it.
I can ofcause calculate the total Carbonate-level by ppm, but it may be prone to errors.

Can I combine the above mentioned testers to grow wiser, and how?
Are there other products out there, that I just haven't been told of?
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