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Necrosis at upper leafs of 1 plant in RDWC

Fro5tystarted grow question 4y ago

Are the leafs dying? Or am i having a deficiency? Hangover NYE. slept till monday. pH dropped to 5.0 by then. Changed water. 2 days EC 0.8 to 0.6. pH stable 6.3, is weird, caus it has been dropping continuously. Lower leafs look fine. It's also the ripest girl fyi. Problem worsen

Fro5ty

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Leaves. Color · Black or grey

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Chow_13answered grow question 4y ago

Looks hungry for PK( purple color and burnt tips that are not curling ) and possibly to much N( seeing "the claw" ). Hard to say without knowing exactly what your feeding. EC of .8 seems a bit low for where you are. 1-1.5 is usually the flower range I see for auto flowers and a bit higher for photo period's.

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superseaanswered grow question 4y ago

looks very hungry. the purple/black/blue on the leaves and stems etc indicate a deficiency in phosphorus. i dont see any burned tips so i can assume its all deficiencies. i dont see cal necrosis so thats good i can assume its not a ph lock or salt lock. i say go upo with some P/k boosters and it will say thankyou :) also you didnt mention what week this is in. if its past week 6 i wouldn't use boosters but would maybe give a shot to something like AN overdrive. if its in the range of week 3 -5 then yeah boost.

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Fro5tyanswered grow question 4y ago

The 1 plants with the problem is also a lot lighter in color then the rest. Mainly at the upper leafs. Had some N tox so have dark green leafs true all plants. This one started getting more bright green and yellow. Normally 3 weeks left. This one plant has already have a lot of milky trichomes.

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