Yellow droop leaves, recent transplant to coco coir

[ElDischavado]

Dear Folks,

I recently transplanted from soil to coco coir, then my plants showed overwater symptoms like droop leaves, been watering 3 times a day since the coco looks very dry, yesterday i notice the leaves started to became pale and today some rust signs.

I fed yesterday with a garden chemical nutes, it contains both calcium and magnesium but little (1% mag, 0,6% calcium), it didnt help.

Is this only a transplant shock or some calcium/magnesium def? I dont have any CalMag but read it is very needed in coco coir.

I use LED lights, read somewhere it causes more needs of calcium, is this true?

Thanks in advance

How long has this problem been going on? 3 days
Are you growing in a PVC grow tent? (example: Hydrohut or any other non brand tents) No, a greenbox mylar
What system are you running? (DWC? Ebb flow? Aero? Water Farm? Flood Tables? and so on...) Coco coir hand watered
What STRAIN are you growing? Bag seeds
What was the establishing technique? (Were the seed or clone?) From seed into soil and then transplant to coco coir
What is the age of your plants? 3 weeks
How long have they been in there mixture they are in now?(coco,soiless etc..) 3 days
How tall are the plants? About 4-5 inches
What PHASE are the plants in? (seedling, vegetative or flower) are the plants in? vegetative
What substrate/medium are you using?(Hydroton, RockWool etc.) Coco coir
What is the Water temperature? Dont know for sure, about 25 celsius
What color are your roots? White? Brown? Are your roots slimy? They came a little brown but mostly white when i transplanted
What Nutrient's are you using?(If growing soiless) A generic npk with micros
How much of each nutrient are you using with how much water? 800ppm
How often are you feeding? (If using soiless) 3 times per day
How often are you testing your pH/PPM/EC/TDS? Every watering, about 5.8, runoff at 6.5
Are you sure your calibration is correct on your equipment? Not very sure, bought some calibration but didnt arrive yet.
When was your last watering? 3 hours ago

 

[MynameStitch]

yellowing is from ovewater when the roots cant get air. 800 ppms is too much for that size of plant your pH run off 6.5 is way too high you need it to remain in the 5.5 to 6.2

How often are you giving it nutes? The rusy looking your refearing too could be a combination of too much nutes and pH becoming unstable. You need to get the pH balanced out and lower the nutes. What are you using for pH balance? what water are you using? Tap RO? Bottled?

 

[ElDischavado]

I was giving nutes daily, as i water 3 times its one with nutes and two with plain water, its tap watter, the last time i checked the water have 50ppm.
The pH 5.8 came when i mix the nutes, the other go with plain water that have 6.4 pH, i will order some pH down, but can i use vinegar to down the pH? Whats the best to help it, like leave without water for a time to help the overwater and then only water with very low nutes?

 

[MynameStitch]

vinegar is a temporary solution it runs out fast. Why are you watering 3 times a day? It's showing a lot of moisture stress I would cut back on the watering..... Cut back on watering as much stick your finger in the coco and see how moist it is.... if it's moist don't water. Also with you watering that much it flushes nutes out of the coco so thats one reason why the pH is off..... depending on how much nutes you use can make the coco more or less acidic and with watering that freqency will flush it and cause pH imbalance and moisture stress.

 

[ElDischavado]

Thanks for the reply Stitch,

I was watering 3 times because i'm really noob I put my finger and the coco is really dry, but the plant is overwatered and droop, i didn't water since you told me about the overwater and the plant is recovering, maybe in a few hours i will water very very little only to avoid some underwater and more damage.

I read about the vinegar here on ICMAG and it's very bad the slime it creates from the mother of vinegar, tomorrow i will got my ph up/down in the mail, also i suspect my pH meter is offset, i bought some strips to calibrate and meter the solution/runoff, this morning i got pH 5.1 in the runoff, don't know if i can trust the meter anymore.

 

[MynameStitch]

There are 2 things that react thats very odd, first off superthrive does not work in hydro systems. It looks like...... well to be blunt..... it's all jizzed up lol sorrry if it's offensive, but thats the only thing that comes to mind lol.
Vinegar can do the same in hydro, but it takes ALOT of it.... mixture of air light and reaction. I have never heard of it doing it in coco, but not saying it can't happen. What link are you reading from about the vinegar doing that in coco?

 

[ElDischavado]

LOL
I read about the vinegar in general, nothing really related to coco, it's in this thread: https://www.icmag.com/ic/showthread.php?t=253664
I think all my problems with this plant came when i removed the soil from the roots in the transplant, the other i leaved a little soil in the roots and it's very fine, same water, same nutes, smaller plant but already growing again. But i learned a LOT already, really liking this coco grow thing

 

[stoney917]

Next time dont remove the soil just transplant leavin the rootball in tact.... lettem dry out abit then water with 1/2 strength and before u know it they will snap outta it..

 

[ElDischavado]

Thanks stoney, i learned it the hard way lol
Now i'm fighting to get the pH in level, i'm watering with 5.8 and got 5.1 and 5.3 runoff, a lot deficiency showed up because of this, growing and learning, need to read a lot more threads to get better...

 

[Apache Kush]

more coco PH problems smh...
must be a hundred threads on this shit

coco grows your a crazy breed

 

[MynameStitch]

When you switch a plant from soil to coco plant takes time to adjust, just like if you put plant from soil to hydro..... but keeping the soil too wet from for too long and pH not being properly balanced also when you switch them from the mediums like that that can also stress too.....

 

[ElDischavado]

After i left the coco dry a little and started to adjust the pH the plant recovered very well, it already grow new leaves and the deficiency signs are almost gone, been feeding epsom salts also at 200ppm.
My problem was to overwater it a lot and when it showed problems started to feed like crazy, like most people do, what for sure caused pH problems, i got sometimes runoff at 6.1 and other times 5.1, now its 5.6.
Thanks for all your help, couldn't recover alone for sure!

 

[MynameStitch]

easy with the epsom salts! for that size you can get away with 1 tsp per gallon of water. Great to hear shes recovering! Good Luck with the rest of your grow, if ya need anything please feel free to post!