Weirdest problem i've ever had in Coco

flipflop64 · May 5, 2022

So I really tried to figure this out but i just dont get it. I have three plants in my self built growbox and i cant get them to grow properly. Ive been growing for years now and I never had this happen before.

I run a 240W Quantum Board with a couple of deep red LEDs in there. 50/50 Canna Coco/Perlite. Ironhead Formula/GHE Nutrients in RO Water. I add couple of bennies and mykorrizae like i always did and it always worked. 18/6 Lights on/off. 72F at night 77-82F lights on. I feed when the pots are light until they drink enough then I feed 1-2 times a day. 1.2EC, 5.8PH.
I dimmed my light everywhere from 5k to 30k lux + lowered and raised it etc.

These plants just dont want to grow. Sometimes they get really droopy, sometimes they start to yellow slightly. Then they peak back up, then they droop again/dont grow etc. Its really confusing.
I tried it all: flush, raise lights, 24h lights on, raise temps, dim lights, turn lights up, water every day, water as usual ... it's just not working and i need help.

Tallest one is drooping a lot, smallest one shows slight yellowing but no drooping. Middle one shows slight drooping but insanely slow growth. I really want to know wtf is going on here.

Aqua Man · May 5, 2022

Because coco is not soil and your grow is probably more efficient this you need to adjust how you feed. Read these and if you have questions feel free to ask

HOW TO WATER COCO FOR BEST RESULTS.

Ok writing this cause i see this issue often and rather have a thread to link than explain this each time. This is not my work but a collection of info from many members here and I have put into practice myself. So first off COCO is NOT soil. For best results we want to keep it saturated...

www.thcfarmer.com

Just understand coco is NOT SOIL.

Marijuana Watering, how media, pot size/shape and environment affect it

Discuss different watering methods for growing your own weed from seeds. Our community members give helpful tips on how pot size and material, as well as environmental factors affect growing cannabis.

www.thcfarmer.com

flipflop64 · May 5, 2022

Thanks for the quick reply but i tried watering every time and even multiple times a day and it did not help and actually made it worse. They also stay droopy after i water.
@Aqua Man

Aqua Man · May 5, 2022

flipflop64 said:
Thanks for the quick reply but i tried watering every time and even multiple times a day and it did not help and actually made it worse. They also stay droopy after i water.
@Aqua Man

What temp water?

How are you venting or replenishing co2?

flipflop64 · May 5, 2022

Aqua Man said:
What temp water?

Water temp is about 70F

Aqua Man said:
How are you venting or replenishing co2?

My ventilation pulls in air from the room. I open the window multiple times a day for a couple of minutes. Not ideal but i dont have another option. Worked before tho so i dont think thats an issue.

GreenMtnGuru · May 5, 2022

Is your coco new or recycled?

If new, did you rinse and buffer?

Have you tried to increase the volume or frequency of your waterings?

Also, your coco should never get dry. That will eff up your CEC and shock your roots as the medium will become salty and hydrophobic.

Observationist · May 5, 2022

Canna coco is probably buffered

He mentioned he feeds 1-2 times a day but waters when it gets dry, I think more water needs to be flowing through, change in watering events, not water amount.

The plants look a little yellow, but some tips also appear nutrient burned.

They aren’t getting enough nutrients and when they do, they start taking off but then stall out?

I water my coco 5+ times a day, nutrient dose in every waterings along with 34% h2O2 and Epsom salts, every watering, 85F

1.2Ec is what 600-800ppm range? (Truncheon, Hanna, eutech)

Just kinda throwing shit out there

@Aqua Man has way more knowledge here obviously.

flipflop64 · May 5, 2022

GreenMtnGuru said:
Also, your coco should never get dry. That will eff up your CEC and shock your roots as the medium will become salty and hydrophobic.

Sorry for my unclear phrasing. Its not getting dry. Its just getting moist.

As I said, I tried feeding three times a day. Did not help, actually made it worse :( @Observationist
I'll try again but I dont think thats the problem.

I am using new Coco @GreenMtnGuru

flipflop64 · May 5, 2022

Also when I water shouldnt they peak back up if that was the problem? Even if its just for a couple hours until they need another feeding? @Observationist

Aqua Man · May 5, 2022

Plants dont get to much water… overwatering is a cause not a symptom. Its lack of oxygen and it should not happen in a 50/50 coco mix.

Id be curious of your runoff ph and ppm?

Exactly how and what your mixing?

And i can tell with certainty you cannot just open a window a few times a day. My plants would eat up 2000ppm of co2 in 30 min in a 7x11 room

Observationist · May 5, 2022

flipflop64 said:
Also when I water shouldnt they peak back up if that was the problem? Even if its just for a couple hours until they need another feeding? @Observationist

When they are thirsty, I’ve noticed usually when I do water,

they will droop for a little and that might be something to do with turgor in the plant, hydrolic pressures.

“sucking the water up into its self” so it appears to “droop”

Observationist · May 5, 2022

Aqua Man said:
Plants dont get to much water… overwatering is a cause not a symptom. Its lack of oxygen

Agreed

Aqua Man said:
and it should not happen in a 50/50 coco mix.

Makes sense.

Wonder what’s the roots looking like then, and yup run off numbers, and what you are feeding with.

flipflop64 · May 5, 2022

Aqua Man said:
Id be curious of your runoff ph and ppm

Ph runoff between 5.8 and 6. Ec runoff 1200-1400
I get 30L RO Water in my tank and add nutrients in this order:

1. CalMag
2. GHE Micro
3. GHE Bloom
4. Ph down

I then fill my watering can and add the additives (bennies, enymes) so i dont have organic stuff sitting in my tank.
PH in my tank drifts slightly so i always adjust before watering again ofc.

Aqua Man · May 5, 2022

flipflop64 said:
Ph runoff between 5.8 and 6. Ec runoff 1200-1400
I get 30L RO Water in my tank and add nutrients in this order:

1. CalMag
2. GHE Micro
3. GHE Bloom
4. Ph down

I then fill my watering can and add the additives (bennies, enymes) so i dont have organic stuff sitting in my tank.
PH in my tank drifts slightly so i always adjust before watering again ofc.

You need to ph stabilize that res.
See here. Side note I believe you ventilation is your issue but up to you if you want to take that advice

Marijuana pH Levels for Growing Weed: A Basic Explanation

In this article, we discuss proper pH levels for your weed plants; alkalinity, soil pH, tap water, and the effects of nutrients on pH when growing marijuana

www.thcfarmer.com

flipflop64 · May 5, 2022

Aqua Man said:
And i can tell with certainty you cannot just open a window a few times a day. My plants would eat up 2000ppm of co2 in 30 min in a 7x11 room

I'll try leaving the door completely open from now on even tho my fan can pull air from my entire apartment because the door is broken and doesnt close completely
Thats a thing i havent tried yet tho, thanks a lot

flipflop64 · May 5, 2022

Aqua Man said:
You need to ph stabilize that res.

I can assure you that only 5.8 ph nutrient solution is getting to my plants. I always adjust before watering.
It jumps 0.1 PH in about 48h tho.

Observationist · May 5, 2022

Aqua Man said:
flipflop64 said:

Ph runoff between 5.8 and 6. Ec runoff 1200-1400
I get 30L RO Water in my tank and add nutrients in this order:

1. CalMag
2. GHE Micro
3. GHE Bloom
4. Ph down

I then fill my watering can and add the additives (bennies, enymes) so i dont have organic stuff sitting in my tank.
PH in my tank drifts slightly so i always adjust before watering again ofc.

Click to expand...

Well, this is beyond me now, Aqua has a point with the air flow though, otherwise beyond my short-time-trivial experience in growing plants.

(Barely 2full years of it, I think)

Aqua Man · May 5, 2022

flipflop64 said:
I can assure you that only 5.8 ph nutrient solution is getting to my plants. I always adjust before watering.
It jumps 0.1 PH in about 48h tho.

I would also change your feeding habbits this is under watering… look familiar?

Video of clone recovering from underwatering

Ok in one thread I posted I was going to do a video of how fast plants recover from underwatering. In hopes that new growers see how easy it is for a plant to recover from underwatering when compared to over watering. I have some toss away clones sitting about and wanted to show how fast they...

www.thcfarmer.com

Observationist · May 5, 2022

Aqua Man said:
I would also change your feeding habbits this is under watering… look familiar?

Video of clone recovering from underwatering

Ok in one thread I posted I was going to do a video of how fast plants recover from underwatering. In hopes that new growers see how easy it is for a plant to recover from underwatering when compared to over watering. I have some toss away clones sitting about and wanted to show how fast they...

www.thcfarmer.com

Coco gets demanding, I probably have not had too many issues because I usually go heavy with the feedings and try to push, then I’ll watch the plants responses and adjust.

Aqua Man · May 5, 2022

Observationist said:
Coco gets demanding, I probably have not had too many issues because I usually go heavy with the feedings and try to push, then I’ll watch the plants responses and adjust.

Thats was for the OP bro see his drooping petiole in the first pic? And in that pic they also show light stress.

Make sure to give 4-7days to see changes OP they dont happen in a day… with the exception of underwatering as you can see

Weirdest problem i've ever had in Coco

Weirdest problem i've ever had in Coco

flipflop64

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Aqua Man

HOW TO WATER COCO FOR BEST RESULTS.

Marijuana Watering, how media, pot size/shape and environment affect it

flipflop64

Aqua Man

flipflop64

GreenMtnGuru

Observationist

flipflop64

flipflop64

Aqua Man

Observationist

Observationist

flipflop64

Aqua Man

Marijuana pH Levels for Growing Weed: A Basic Explanation

flipflop64

flipflop64

Observationist

Aqua Man

Video of clone recovering from underwatering

Observationist

Video of clone recovering from underwatering

Aqua Man

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