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Hey, guys, listen, I don't know what to think...

Xlgunbody
Xlgunbodystarted grow question 4 years ago
Hey, guys, listen, I don't know what to think anymore... my lemon Kush is developing new yellow leaves... and I ve already checked everything... parameters, okay, fertilized, tiny and wet - looking... and I don't know what to think. Help me... thank you
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Week 4
Techniques. Defoliation
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Sweet_Seeds
Sweet_Seedsanswered grow question 4 years ago
Personally, I think users like @MarcXL have given you some good advice. I also believe that you should keep in mind that Deep Underground has this nutrient composition: 3% humic acids. 1% Fulvic acids. 0.7% Potassium Boron. Copper. Iron. Magnesium. Zinc. I have observed that you have been adding it from the beginning. Perhaps, the excess of any of these nutrients may occur. This may cause deficiency of others. Try doing a root wash, and see how it goes for a few days without fertilizers. Sweet smokes! -Apolo
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Mrs_Larimar
Mrs_Larimaranswered grow question 4 years ago
Hi, to me the problem is to search anywhere else. They are sitting in abig pot filled with Lightmix. That means nutrients for around 3-4 weeks , and you startd fertilising them very early with a big amunt for a seedling.same to see in this week.You were talking of defiencys... i dont see any defiency..... in the past . so i would go with a "absolutely recall".... give the girls a good flush. no blooming nutes, no growing nutes, only beneficals until you see Yellowing older leaves,,, that means you can star to feed growing nutrients. Just go with you benefical stuff . likepurezyme and deep underground and maybe the micro nutrient. just let them take a dep breath and start new
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Grey_Wolf
Grey_Wolfanswered grow question 4 years ago
@Renton Its a root issue compounded by a lack of calcium magnesium and maybe even copper. The ph seems ok at 6.2 so maybe you need to use a cal mag supplement
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MarcXL
MarcXLanswered grow question 4 years ago
To me it seems like a copper deficiency as the tips and edges of leaves turn pale yellow. This can happen due to root problems, wrong ph in soil or using dead water (distilled water, reverse osmosis water). It is very unlikely that there is no copper available in your water or soil, so usually a copper deficiency in cannabis is caused by a pH problem at the roots that is restricting access to nutrients. Copper tends to get locked at certain pH levels, and is better absorbed by the plant in a slightly acidic root environment. Copper deficiencies are more likely to appear when using heavily filtered or reverse osmisis water to feed plants since any copper has been removed, but ph is a much more common reason for copper deficiencies. Copper deficiencies can show up when the plant is having root problems or if the plant is overwatered, even if the ph is right and the copper is there. Flush your soil with clean, ph’d water that contains a regular dose of nutrients. This will remove any nutrient salts that may be affected the uptake of copper and help restore ph to the normal levels. Watch to make sure that the problem starts to clear up within a couple of days. Old growth may not recover as copper is low-mobile, but new growth should be healthy.
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