I thought magnesium only affected calcium levels??
Alk - fluctuates between 7 dkh and 10 dkh. In a matter of 3-4 days.
calcium - 360 ppm
magnesium unknown....
Salt is I/O. And when i tested the salt from a new mix left 24h. to circulate. I got low reading on both alk and calcium.
alk - 6 dkh
calc - 280 ppm
magnesium unknown
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