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#yellow #leaves #help

  1. M

    Yellow leaves

    hey the leaves on my cannabis plants are turning yellow and I'm not sure what it means.. they are 3 weeks old veg, temp stays around 21-31 degrees celsius humidity is from 40%-65%.. 250 watts hps 3 pineapple kush and 1 blue mystic they get biobizz grow 2ml/50cl and thinking of adding alg a...