Ciaransestarted grow question 2 years ago I'm having a magnesium deficiency with my auto flowers. I'm using Biobizz: Light Mix, Grow, Bloom, Top Max, Calmag, Acti Vera, Bio Heaven, AN Bud Candy & Atami Bloombastic I have upped the dosage today to 2ml per litre of water, from 1ml.
How much is too much Biobizz calmag?
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Leaves. Veins - yellow between