Coco coir start of wk 9 since flip

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Skillcraft

Well-Known Member
I am having a problem I have never dealt with before. I have 4 girls growing but only one is giving me some problems. I run 3 gal pots using gh nutrients. I am using a Growers Choice roi e720 at 926 par. I feed at 1.2-1.4 ec with ph at 5.9-6.2. Temps are 78-82 degrees lights on and 68-73 lights off. Problem I am having is that about halfway down plant leaves are turning yellow at a clip of 4-5 per day. I feed daily til I get a fair amount of runoff but for the life of me I can't figure out her issue. Thanks for any and all help.20231226_025911.jpg20231226_025858.jpg20231225_192739.jpg20231226_025936.jpg
 
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Gdp1

Well-Known Member
During flower u should be running higher e.c between weeks 3-7 then gradually decrease to about where ur at now given ur at 1.2-1.5max
 
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Gdp1

Well-Known Member
I feed around 3.0 EC during flower but then again I run high frequency feeding .I decrease E.C around week 7-8 depending on how bud development looks to 0.8-1.2 right to the end
 

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TCH

TCH

Well-Known Member
I'm gonna parrot the "check your runoff ec and pH" I ran into a big lockout problem and when I checked the runoff, it was like 5 times what I was putting in.
If your runoff is higher ppm/ec than what you are putting in, mix up a light batch of feed, like 200ppm and feed it through and flush the coco until you are getting a ppm/ec reading that is lower than what you are normally feeding.
 
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boostedhonda

Well-Known Member
Even though runoff is higher than input, I’d say you are under feeding. Up your feed to a 2.0 and I bet it slows or stops. 1.2 is not enough even for veg imo
 
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