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Brown parts on more and more leafes

weefi
weefistarted grow question 2 days ago
I see more and more brown parts on the leafs of Sour Diesel (only) any idea what the issue might be? For reference see also my pictures of SD. First idea: Added 1 liter banana extract(to get Potassium) added 2 liter water and 2,5 ml CalMag.
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Week 7
Leaves. Curl up
Leaves. Color - Dark-brown
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m0use
m0useanswered grow question 2 days ago
Plants are looking a bit overfed in N to me. The pattern is looking like P issues to me. but could be wrong. https://420life.com/wp-content/uploads/2021/10/Marijuana-Leaf-Deficiency-Chart-scaled.jpg This leaf chart might help shed some light on the issue. Your diary says you added a bunch of "AACT" what is that? I would try not to defoliate to much now they in flower. Also you light is on 24/0. that's not great. 18/6 is good for autos. all plants need some down time. I would switch this asap and see if they bounce back a bit. Plus save a bit on hydro.
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BerrySweetHigh
BerrySweetHighanswered grow question 2 days ago
High weefi, I am not familiaire with AACT but when I look at your diary then you can see that they were really healthy till they switched to flowering. That does tell me that the AACT contains too much Nitrogen (N). So my advice would be stop with AACT and add the 1 loter with banana extract to add more Potassium (K) and cal-mag. And you really want to add Phosphorus (P) into this nutrient solution because (P) helps the plant to develop the buds. You can make it by using coffee ground and the best part is that the coffee groud also provide you with enough Nitrogen (N) so that you do not need the AACT anymore from now on. You can also use a PK- Booster instead of the homemade products. It is waaay easier to regulate and there are also organic options. Happy Growing Buddy! 💚
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AsNoriu
AsNoriuanswered grow question 2 days ago
Overfeeding on Nitrogen part, heavy btw. That could block calcium. She needs proper PK and reasonable calcium and magnesium. Beeing on safe side brings troubles, 2.5 ml of calmag by most manufacturers is heavy overdose ..
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