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Cal mag ??
Student_of_Sciencestarted grow question 2 years ago
Should the cal mag be half as well ? And how long does it get added?
like
Chow_13answered grow question 2 years ago
Are you using RO water or distilled water? If your using tap water then chances are you wont need it and if you do then only 1/8 - 1/4 the amount recommended MAX.
If your using water with less then 100 ppm then yes, you want to add 1/4 -1/2 recommended.
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