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Northern lights with yellowing leaves

Reedius
Reediusstarted grow question 4 years ago
Hey Guys, my NL is starting to have some issues. I started off with the leaves just laying low, i've eliminated lack and excess water, and it's not temperature related. I did a small flush 3 days ago and things got worse. What do you guys think?
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Week 7
Leaves. Color - Yellow
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OGgrows
OGgrowsanswered grow question 4 years ago
Hi @Reedius in the case of your plant it seems to me excess water in the substrate and lack of air circulation. Control your subtract by the weight of the pot, the almost dry substrate makes the pot very light. intervals the space between irrigation, allows the substrate to almost dry between irrigation. put a fan blowing wind between the top of your plant and the light source, these little branches need a lot of air circulation to revitalize. good luck mate šŸ‘
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Reedius
Reediusanswered grow question 4 years ago
Thank you all for you comments. It seems that it was a mixture of things. Excess water from the flush was clearly something and I think low temperature was another factor. I did a number of things. First I gave her some more nutrients, but that didn't do nothing. Then I took the plant out of the pot, the root system is really developed, and put some more substrate on the bottom of the pot and on top. After that i gave her some more top max from biobizz mixed with crushed snails and a small teaspoon of ash, I did that in case there was a calcium issue, don't really know if it's efficient or not. The result was that a day later the leaves are back up and the buds are growing again. Gonna keep monitoring the next days and update with pictures on monday maybe.
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GRow_M8s
GRow_M8sanswered grow question 4 years ago
Hey m8, Are sure temps didn't dropped below 17CĀ° or you didn't watered with cold solution?! Cold temps in soil can cause deficiencies and drooping leaves.
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Harrythehat
Harrythehatanswered grow question 4 years ago
i see over watered and under feeding earlier let them dry out before re watering, don't go the other way and over feed now cos there coming to the end of food in a couple of weeks and will draw from the leaf, hence yellowing clue is in what you said did a small flush and things got worse your substrate is wet can see that in pic let it dry an they will buck up
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MiPotFarm
MiPotFarmanswered grow question 4 years ago
What kind of lights are you running and at what distance?? Seeing as you eliminated other factors my next best guess by what Iā€™m seeing is some sort of heat stress! Put a thermometer right next to the canopy and see if you can lower that if itā€™s high! Raising your light? Better airflow??
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