plants look deficient in many different ways

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okiefarma

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Hello,

please let me know if any additional details are needed.

We are feeding once every other day until there is runoff.
Then show extreme signs of deficiency.
Feed was 1.8 EC PH 6.2 and full strengths jacks hydro 321 JR Peters.
Now is it 1.2 EC PH 6.4 jacks at 75% strength with Epsom.
Coco coir #2 from Oregon’s only.
Gavita’s at 80% 8-10 feet from the canopy.
We have turned half the lights off at this point because the team thinks we are burning our plants vegging them.
The plants in this photo are approximate 7-8 weeks of age.
Humidity and temperature charts attached.
Please ask as many questions as you would like I am happy to answer.
 
Plants look deficient in many different ways
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Plants look deficient in many different ways 3
Plants look deficient in many different ways 4
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Aqua Man

Aqua Man

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With that much feed and the looks of those plants im almost positive you are seeing a lockout and for some time now I'm guessing.
 
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okiefarma

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Absolutely,

when I stuck the traunch in it showed higher ec then fed.
We have flushed until PPM was within 10% of what I was flushing with.
 
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Aqua Man

Aqua Man

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I'm not a coco grower, I grow in RDWC but I would ph water and flush probably 3x the volume and then feed maybe 50% strength nutes after flush. But maybe wait for a coco grower just thinking I would pass on my observations and get the convo started.
 
Aqua Man

Aqua Man

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Absolutely,

when I stuck the traunch in it showed higher ec then fed.
We have flushed until PPM was within 10% of what I was flushing with.
What ppm where you flushing with? Sorry I missed that last post. If you flushed well and then fed you should see improvements in a few days tops.
 
Enforcer

Enforcer

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We are feeding once every other day until there is runoff.

Hi, I’m a coco grower. I think your issue resulted from not watering enough. Coco should never ever get dry. When it dries out, the nutrient salts concentrate on the coco fibers. Then when you water again, the solution reconstitutes those dried salts, which adds to the total EC of the medium. This will in short order push the EC of your root zone too high and cause a nutrient lockout. The flush was a good call. Keep the EC at 1.0 until you see how they respond. Your pH looks good. From this point on I would suggest watering those plants at least twice a day. I do 3x a day in veg and up to 6x a day in full flower. I think the hardest part of growing in coco is letting go of some soil practices like the fear of overwatering. Coco plants grow best with short watering intervals, until runoff, several times a day.
 
Last edited:
Aqua Man

Aqua Man

26,480
638
Hi, I’m a coco grower. I think your issue resulted from not watering enough. Coco should never ever get dry. When it dries out, the nutrient salts concentrate on the coco fibers. Then when you water again, the solution reconstitutes those dried salts, which adds to the total EC of the medium. This will in short order push the EC of your root zone too high and cause a nutrient lockout. The flush was a good call. From this point on I would suggest watering those plants at least twice a day. I do 3x a day in veg and up to 6x a day in full flower. I think the hardest part of growing in coco is letting go of some soil practices like the fear of overwatering. Coco plants grow best with short watering intervals, until runoff, several times a day.
I'm gonna start tagging you everytime I see a coco grower. It almost seems like there are 1000x more coco questions than there are growers at the moment. I usually just hop in to get the convo started until one of you experienced coco growers pop in.... Not to many of you here in comparison to soil and other hydro idk maybe I'm just blind.
 
Enforcer

Enforcer

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I'm gonna start tagging you everytime I see a coco grower. It almost seems like there are 1000x more coco questions than there are growers at the moment. I usually just hop in to get the convo started until one of you experienced coco growers pop in.... Not to many of you here in comparison to soil and other hydro idk maybe I'm just blind.

No problem man. I love talking grow. This watering issues is one of the most common I see. It’s frustrating for them because they think they are doing the right thing by letting it dry out a little and in actuality they are making it worse. I’m just trying to help where I can.
 
Rikismom420

Rikismom420

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Hello,

please let me know if any additional details are needed.

We are feeding once every other day until there is runoff.
Then show extreme signs of deficiency.
Feed was 1.8 EC PH 6.2 and full strengths jacks hydro 321 JR Peters.
Now is it 1.2 EC PH 6.4 jacks at 75% strength with Epsom.
Coco coir #2 from Oregon’s only.
Gavita’s at 80% 8-10 feet from the canopy.
We have turned half the lights off at this point because the team thinks we are burning our plants vegging them.
The plants in this photo are approximate 7-8 weeks of age.
Humidity and temperature charts attached.
Please ask as many questions as you would like I am happy to answer.
Hi you might want to put coco in your thread post also that will help tag those coco growers....☺️
 
Enforcer

Enforcer

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263
do you think we can flush via our drip system?
You can. It’s more effective by hand of course. But you have a lot of plants so if it was me, I would just run the new solution through the drippers a good while. Then begin the 4x a day fertigations.
 
Enforcer

Enforcer

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Theses are my plants. They are on day 35 from flip. Three different strains in a 4x4 tent, 3gal fabric pots, 1.2 EC and fed 5x a day currently. I only show this to demonstrate the importance of good fertigation practice when growing in coco/perlite.
 
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okiefarma

5
3
Theses are my plants. They are on day 35 from flip. Three different strains in a 4x4 tent, 3gal fabric pots, 1.2 EC and fed 5x a day currently. I only show this to demonstrate the importance of good fertigation practice when growing in coco/perlite.
So our guys are flushing by hand today we tried via the emitter's didn't ever quite get to what we were feeding which makes me think I will have to adapt the irrigation to soak more of the coco with each water.
We will be testing with equally saturated pots and measure the total water volume going into both and total runoff volume.
Do you think this is a possibility or I am looking too closely?
 
Enforcer

Enforcer

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So our guys are flushing by hand today we tried via the emitter's didn't ever quite get to what we were feeding which makes me think I will have to adapt the irrigation to soak more of the coco with each water.
We will be testing with equally saturated pots and measure the total water volume going into both and total runoff volume.
Do you think this is a possibility or I am looking too closely?
Spreading out a few drippers per pot will help get a more even saturation. I’m running four 2gph emitters per pot. I made my rings out of 1/8th inch spaghetti tubing and some T’s.

I wouldn’t worry so much about volume right now. You want the run off to be within 100ppm of your input. I would flush with the new solution until that is reached. Then once you get the plants healthy and growing you can dial in the solution volume in and out for efficiency.
 
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