ScotJudd
Aquarium Advice Addict
I regularly test Kh and Gh. I aim for a reading of 6 degrees of each. Would there be any advantage in using a TDS meter, would that not just tell me the total hardness and not the balance of Kh and Gh (eg. Kh could be lower and Gh higher and still get the same result as Kh and Gh being equal).