Hello group. I asked a question about ec meters before, but not sure I fully got it. I get PPM but the other measurement that’s labeled US/CM I do not fully get. I just measured my hydro tank with it and the ppm is about 450 and the US/CM is 1050 or so.
I have a chart of what the PPM should be for different stages if growth but cannot find anything that tells me what the US/CM should be.
Second question is if I wanted to raise the PPM can I do that without raising the US/CM? If so how would I do that. Also vise versa how to I raise the US/CM without raising the PPM?