The reason I ask is - I took notes while doing some research about a month ago. I jotted down this:
Alk - 8-9 dkH, but 10-12 is okay, too
Calcium - 400-500ppm
Magnesium - 1450-1500ppm
But I don't remember if that was absolutely perfect, ideal parameters or just a good range to aim for. So I...