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Pleas Help!  


danizeap
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Hello everyone,

There has been problems with my plants, at first I thought it was nutrient toxicity but the problem continues (on new and old leaves) even after being flushed two times. 

My medium is a 70/30 coco perlite mix, pH from 5.5 to 6 and EC between 900 to 1k. 

Here are some pictures:

0a9582dc 79e2 4d41 8675 0eb6033607ae
ef108c1b e467 4144 8b54 25588ce77475
07c00698 78b0 477f 9e29 0f7260cd80df
0302bede 2403 49b0 859c ca2e9d3e0645

 Please Help! 

Thanks guys 

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Growboy
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Ocimene
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Hey Danizeap,

I’m very much a novice myself but to me it looks more like some little critter’s been having a taste of her leaves than it does nutrient burn. 
I could be wrong but I’m sure someone will be along soon to offer a more experienced analysis. If it is, you’ll probably just need to give her a spray with a neem oil and horticultural soap mix. Treated mine with it a little while back and it worked really well. 
Anyway, good luck! 

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monkeydo
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Limonene
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Nothing super alarming in those pic mate. Looks like some ph fluctuations and maybe a little root stress. In veg try to aim as close to ph 5.8 as you can and avoid fluctuations of more than 0.1 day to day and she will like it more. The twisted leaves are probably due to root stress but check the plants carefully for any bugs. There are insects that can do that but it’s not common. All this is most likely due to variations in the feed. Sometimes it’s trial and error to find exactly what each strain wants but your grow isn’t in any immediate danger. Have you checked the EC of the runoff?

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danizeap
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@monkeydo Thanks! 

I will watch closely the pH so it does not fluctuate, keep it in 5.8. If there was any root stress how could you alleviate that? We get aphids sometimes but we keep a neem treatment every now and them, when we see them come back. For the variation in the feed, keep the EC at a constant number with no fluctuation like with pH?. I do check EC for the runoff but haven't in a few days, on Sunday I will measure and come back with the number. 

If there was any nutrient toxicity it should be out by now right? they have been flushed twice. 

There are also some leaves with this:

9ebd14b7 6501 4ff9 9495 dbf55da2aa2b

 

Thanks again!  

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monkeydo
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Limonene
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In coco keep the feed at a constant level and measure the output EC of the runoff. If the runoff has an EC 200 higher than the input, drop the input EC down 200 for the next feed. Inversely, if the output EC is more than 200 lower than the input raise the EC. This will allow you to find the exact level of feed your plant wants. Avoid making large changes and try to find that happy spot. Plants thrive on consistency but don’t go crazy trying to get exact feed EC numbers, they can handle a little fluctuation here and there. If you have flushed twice the salt build up should be gone. Once you get some runoff data the feed can be adjusted as needed. If she was in my tent I would not be concerned at this point.

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danizeap
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@monkeydo Amazing! Thank you so much for the advice.

It is strange because it was all out of a sudden, I will follow your advice.

For the root stress is there anything you can do to make it better?

 

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monkeydo
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@danizeap young plants see some stress from time to time. Hot spots in soil, dry spots in coco, salt buildup, to little/much water, and other things cause it. It looks very minor and just focus on consistency, the plant will come around. Even swinging the ph from 5.5 to 6.0 can stress some strains. Keep things consistent in the happy zone and everything will be fine because that removes the stress. Your plants look good right now, no worries mate.

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Macky
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Great advice Monkey!!

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Grower Urban
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Dang @MonkeyDo A1, you truly know your stuff 👍👍  I'll have some questions soon FYI

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waytoodepp
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Terpinolene
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I wouldn't worry much! A bit of yellowing is normal during the cannabis plant's lifespan. Feed her and watch you watering habits as well as temperature and ph, and keep checking the plant for new symptoms or wellness

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February 22, 2020