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Leaves are getting yellow and brownish spots
WietBioloogstarted grow question 3 years ago
Two plants, one is getting light green/yellow (more yellow at bottom, light green at top), other is getting brownish/greyish patches all over. I have started feeding over three days ago for the first time (very rich starting soil). Any input on what to do?
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Leaves. Color - Yellow
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BraveheartGeneticsanswered grow question 3 years ago
Those dark patches in the first picture screams oxygen starvation. The second picture points to calmag deficiency. You could have both. make extra sure of you ph and ec levels. Adding 3% hydrogen peroxide will add oxygen to your root zone. Other than that, the last pic showing your plant looks awesome. Keep up the green work...good luck and happy growing
WietBiolooganswered grow question 3 years ago
There are holes in the pot ofcourse, I meant making some holes in the soil. But I checked and the drainage seems to be okay, proper run-off coming after watering. Maybe calcium/magnesium shortage...
I think I will wait for a couple of days to see if the nitrogen feeding does anysthing before trying something else.. Maybe calcium/magnesium addition...?
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BraveheartGeneticsanswered grow question 3 years ago
Are there no holes already in the pot? If so, definitely make some drainage holes. Thats probably the cause of the lack of oxygen, you're downing them.
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WietBiolooganswered grow question 3 years ago
Maybe to much water can be the problem then? Should I try to poke some holes for draination?
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WietBiolooganswered grow question 3 years ago
I add water from groundwater (around 15 celsius (60 fahrenheit). But regime is 12/12 with 600W lamp, around 30 celsius during light, 15-20 celsius during dark. pH of water was around 6.8 en run off water 6.5.
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BraveheartGeneticsanswered grow question 3 years ago
Hi mate, that looks like lack of oxygen in the root zone. Your substrate could be too warm or your water being added it too warm. When the water goes above 72'F it prevents the roots being able to absorb oxygen. Too low and she will be unable to absorb nutrients. I hope this helps, good luck and happy growing
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