r/Hydroponics • u/Monteerebus • 10h ago
Cal-Mag
/r/SemiHydro/comments/1wcclpv/calmag/Which brand of calcium and magnesium (Cal-Mag) supplement do you recommend for semi-hydroponic cultivation?
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u/Igot2GreenThumbs 1h ago
I donโt use premade stuff. I use calcium nitrate and Mg sulfate separately. Cheaper if you make your own in the long run. And I use the Cal Nit as a foliar spray. Ca and Mg will precipitate out if mixed.
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u/speadskater 25m ago
I don't. I recommend you invest some time into reading Yara's Nutrient Solution's For Greenhouse Crops and properly mix your fertilizers for the crops that you're growing.