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Is it light burn?
MGGrowRoomstarted grow question 3y ago
Could this be from light burn or is it something else?
Moved my light 15 cm higher for now.
Some of the branches are showing purple color. That means stress for the plant right?!
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GrowingGrannieanswered grow question 3y ago
The irregular pattern of the damage says to ME that it is indeed some light burn... nitrogen toxicity starts at the tip of a leaf and moves inward - and starts on the lower leaves... calcium deficiency will begin as small brown dots ... so what your leaves are displaying fits neither one of these... You've done the right thing by moving your lights higher... just be careful when you water that you don't get the leaves wet and you should be fine.
Good luck!
Organomananswered grow question 3y ago
Burning from feeding too much or too often, or maybe both......
The purple tinge and clawing leaves indicate nitrogen toxicity.
It is not a lighting issue.
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Chow_13answered grow question 3y ago
Nitrogen toxicity causing a lockout. If your feeding bloom nuturents then lower the dose. NPK shou be in the ratio of 1-2-3 in flower
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