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P lockout mid flower coco ph drop

Fatnastyz
Fatnastyzstarted grow question 1d ago
Midflower lockout P starts, cal/mag is in line up. Week 3-4 runoff ph drops 5.2-5.3 then P. I follow success feed chart. Adjust feed to match intake but salts starting to stack and lockout. I have added add cal/mag. Maybe too dry, but still happens. Last feed 1050 still stackd
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Leaves. Edges burnt
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John_Kramer
John_Krameranswered grow question 20h ago
N excess, P,K lock Stop using veg or any rich N ferts
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m0use
m0useanswered grow question 21h ago
its burning. to much feed. and to much N, plants are very dark and rich green.
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HandsomeTerpz
HandsomeTerpzanswered grow question 1d ago
Hey Fatnasty He leaves in your pictures show very dark green color, which is a sign of nitrogen excess, and the burnt tips/edges suggest nutrient burn. In flowering, this often goes hand in hand with a potassium issue either a deficiency or a lockout caused by too much nitrogen or incorrect pH. Here’s what you can do: Check your pH and EC if the pH is off, nutrients (especially potassium) can’t be absorbed properly. Aim for 6.0 in soil, 5.8–6.0 in coco/hydro. Reduce your feeding strength the plant is showing clear signs of overfeeding. Try lowering the nutrient dose and see if new growth comes out healthier. Consider a flush with pH-balanced water if EC is too high, then reintroduce nutrients at a lighter dosage. Focus on bloom nutrition in flower, plants need more potassium and phosphorus, and less nitrogen. The damaged leaves won’t recover, but the goal is to stop the issue from spreading. Keep an eye on the new growth that’s where you’ll see improvement. Keep us updated 😊
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