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    Possible early stages of Cal/Mag deficiency ?

    Hey guys, first time indoor grower here. 2x4x6 tent, 200w LED with Samsung lm301b diodes+Meanwell ELG 240 Driver, 150mm canfan and filter, and running soil as medium. Temps around 70-71 and humidity stable at 50%. Havent been PHing water as my pen is out of calibration, so was thinking it could...
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