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If some one can tell me how to link a spreadsheet page ill link the ppms of each element of my recipe for each week, from using a nutrient calculator.
My question is that do i need to add the cal mag when feeding or just when watering, (i use 0-10ppm water) as i thought there would be enough in the gh 3 part to not need it unless i was seeing major deficiencies, if i do need to add it, how much, and will the added N be a problem?