Aha I see.
Someone reported this with kent salt:
Specific Gravity: 1.024 - 1.026
pH: 8.2 to 8.3
Calcium: 550 to 575 ppm
Magnesium: 1,350 to 1,450 ppm
I though people try to keep calcium level around 450ppm but this salt give 550ppm+. Is that too much? This figure is actually making me rethink about kent and get IO.
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