Carencia de Mg
Bembetostarted grow question 5y ago
Flag-shaped leaves with yellow spots, no doubt a deficiency of Mg. The problem is that I don't know what causes it. I will do a soil acidity test to be sure, but I'm leaving the thread open for more experienced growers in case they could lend me a hand with this.
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Bembetoanswered grow question 5y ago
I solved it by adding organic matter (fish meal) and cane molasses, all the nutrients were in the soil, there was just a blockage.
Bembetoanswered grow question 5y ago
The pH resulted in: 6.6 in water and 6.3 in substrate, I only fed with organic matter and molasses to encourage microbial life. They're improving.
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Toddyanswered grow question 5y ago
I had a bit of the same problem tried q bottle of volvic had brightened up so another tomorrow
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Aqueminianswered grow question 5y ago
To me it looks like your not feeding enough cal-mag, If your running LED lights you need to feed a little extra cal-mag. But Roberts advice is correct. Always start with pH check before anything else.
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Robertsanswered grow question 5y ago
So I see potassium and magnesium deficiency. I would guess your substrate ph is off and you are experiencing lock out. Check run off ph to ensure it is in range. My money is on your ph being off.
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