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What kind of deficiency or excess ist this?
red_pandastarted grow question a month ago
Those are from plants which are flowering for almost two weeks now. I had some yellow to brown spots on some leafs after I gave them BioBizz Grow, Bloom and Top Max at the start of the flowering. After that I watered them with clear not corrected water for the last week.
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GuybrushThreepwoodMPanswered grow question a month ago
Likely calmag defency, fix ph to 6.5 and add 1.0-1.2 ml calmag per liter. Biobizz does not come with calmag, it's either in the soil (limestone usually) or you have to supply it. Also if you pH is over 7 the roots won't be able to uptake calcium and magnesium.
