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SOIL young yellow leaves with dark green spot

G

georgesbaliverne

New member
mainly i hope they wont suffer too much, i had to take them early at home, without equipment yet, but my parents wanted them away sooner, so now they have no light except windowed/sun half day, they are close to flowering or at the point,no nutriment yet my father was giving them 20-20-20 outside, now been a week they started to get these spot on younger leaves, tried to find picture of anything similar but couldnt find anything that look like close enough. The picture arent good tho you can see what is happening just the color shouldnt look brown its these young leaves are yellow and these spot are much green darkish grey.I'll reupload pic if needed with better clarity. water is around 6.8-7 ph. temp room 23-25c humidity 30-40%, and sry thats not my native language. hope i can save them or thats not major and i can do something quick. thanks in advance for any help or explanation if thats normal
 
thanks for the quick reply, i should have kept the room close it had good humidity level but i started to notice some white spot was fearing mold was attacking the plant, room is closed and not much ventilation, cant wait to get that grow tent will be less tricky to monitor the perfect environment. 2 days hope its not too late, at least they arent all that bad, the taller plant is looking bad the one i took pic, 2 arent that bad, and 2 others are ok not showing those bad spot yet. its weird that i looked at this defiency but never thought it could be that, i looked closely the leaf and didnt think they were the same problem, my picture like i said are bad lightning is almost night and the orange light made picture look more brighter(brown spot of leave in fact are greenish dark), i'll take better tomorrow and if it can help add more picture of this problem will help maybe. thanks again
 
It still looks like either a boron deficiency or a potassium deficiency. Here is more info on potassium deficiencies: http://www.growweedeasy.com/potassiu...iency-cannabis

Boron Deficiency:
With a boron deficiency, upper cannabis leaves display abnormal and/or slowed growth. Growing tips may not grow properly, may display twisted growth, and may die off. New leaves may wrinkle or curl.

Potassium Deficiency:
With a marijuana potassium deficiency, you'll generally see symptoms on older leaves, but not always. Sometimes you'll see the symptoms at the top of the plant. Leaves with a potassium deficiency get yellow, brown, or burnt tips around the edges and tips. The burnt edges may look a little like nutrient burn, except the affected leaves also start turning yellow in the margins.
 
im really starting to worry too much, been a week i just keep thinking what could be wrong, tho its obvious I shouldnt watered with it and even forgot to ask here my water is hard. but ph should be fine. what I could do for a cheap way to fix the "limestone" i think thats how you call it(the white s**t that stack in pipe), my parents home have a filter for only this they said,its not RO. I wonder if that could be enaugh to avoid root/soil problem.
very much appreciate the info thanks a lot
 
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