George Farmer
ad aqua
Hi,
Can anyone tell me the relationship between gH, kH and TDS. I understand gH is general hardness and each degree is 17.9 ppm, but is that ppm CaCo3 or ppm TDS? The same with kH. If I wanted, say, 100 ppm TDS do I need to add the gH and kH values to a total 100 ppm or just gH. Confused? I am!
Can anyone tell me the relationship between gH, kH and TDS. I understand gH is general hardness and each degree is 17.9 ppm, but is that ppm CaCo3 or ppm TDS? The same with kH. If I wanted, say, 100 ppm TDS do I need to add the gH and kH values to a total 100 ppm or just gH. Confused? I am!