Clones yellowing/purpling after transplant from soil to coco

[1love1earth]

So I've gotten some clones, and they are well rooted in soil, about 6-12" tall.

I've transplanted several times, and each time, they turn yellow/limish green, and sometimes turn purplish (especially the stalks/stems).

At first I suspected the PH, as my first clone that I did 3 weeks ago or so has recovered, and looks healthy green. Like maybe it just needed time to adjust.

It resembles what I think looks like a severe nutrient deficiency, which could be lockout from the PH?

I'm using coco coir, with biocanna nutrients.

I've been using an extremely low dose of nutrients.

The last ones I transplanted I watered with a PH of 7.0, rather than 5.8 or 6.2. They got transplanted yesterday, and still look OK.

The others I transplanted about 1 week ago, and watered at a PH of 6.8 or so after I saw them yellowing. Watering daily (no signs of overwatering) and they still haven't recovered.

My hope is that if it is the PH, that if I bring it down gradually, it will be OK.

The growth is yellowing all over, not just on the bottom growth. Turns limish green (from healthy dark) and purpling in the veins.

So what should I do in the future? What can I do now?

 

[10k]

Did you notice how nice everything was doing in soil, being so well rooted about 6 to 12 inch tall ?

Transplanting if done right, should not be completely changing out all the medium off the roots, but rather just moving the existing root mass,
medium and all into a larger planter full of the SAME medium.

In the future, I would either start the clones in the medium you plan to grow them out in,
or do the transplant as soon as possible if you can't obtain the clones in the medium you're wanting to run with.

The safest and least stressful method for these clones would have been to NOT transfer them from the soil they came in to the coco, in the first place.

Now though, you have little choice but to hope they adjust to the stress they've gone through already from the transplanting and the high pH which is likely blocking uptake of several elements. Bring that pH way down and let the plants enjoy a bit of drift in a full pH range recommended by biocanna for your coco medium.

This leaves me wondering though, after the transplant why were you feeding them at such a high pH anyway ?

 

[EthnobotanicA]

The mix from an aerated soilless potting mix, which is what I am guessing you are actually using (soil is sand, silt and clay, not peat and perlite) to pure coco shouldn't be a big problem. You might try giving a couple of them a good dose of stronger nutrients. You are giving them a nice, large area to root out in, but are not getting any nutrients to support the new growth. There is nutrient in your "soil", but not so in the coco. I also add +-2ml epsom salt/gal for the first few waterings, I have never gotten a Ca def, but some people use Cal-Mg or equivalent is better.

 

[Hash Man]

its your ph... coco is sensitive. channge it to 6.0 and add nutes and you will be fine. i have experienced it myself... i like to transplant from coco to soil, not the other way around... Coco is a great medium... im making the switch to it full time next round.

 

[1love1earth]

I figured I'd run a high PH on them because the 1st clone I had did the same thing at my normal PH of 5.9 or so.

I figured it was that they were used to a higher PH, and I'd have to bring it down slowly, but clearly that isn't working. I'm wondering if somehow it isn't the nutrients being at too high of a dose or something. Though it clearly resembles nutrient lockout to me, which would seem like a PH problem...

Still, after trying different PH's, I'm not sure what's wrong.

I highly doubt it is a nutrient deficiency, I mean if it is it's odd, I have much larger plants started from seed that look perfectly green and healthy on a regiment about 1.5-2x stronger.

 

[1love1earth]

here's a healthy plant, transplanted a few days ago, 7.0 PH, still greenish, dunno if it will last.

Here's a clone transplanted a few weeks ago. Looks bad.

Lime green and sick looking

1 week old or so transplant, SSH, looks like it's halfway tolerating the transplant, but still not lush healthy green like it was.

 

[1love1earth]

Just bumping this for more replies, it's been a while longer, and still they are struggling.

 

[koidr]

what is the air temp?

 

[mexilandrace]

wait... your PH in coco is 7?

I don't coco, but I do know that is high for a soiless mix

out of curiosity, why the medium switch? why not root in coco? or well I guess some people buy clones.

 

[Sheik Yerbouti]

Hi 1love1earth,

if these ladies were mine I would flush the pots with pH5.8/EC1.6, watering with pH5.8/EC1.6 (you need to have some draining nutrient solution out of your pots) only once a day (when the lights start) during the next time.

 

[1love1earth]

well, to update, over time they recovered, I'm guessing the switch from soil to coco (and whatever PH changes associated) was rough on them. They flowered up nice however I do think I lost a good bit of yield on the ones that went outdoors and flowered sooner, as opposed to my indoor, which gave excellent results.

I didn't see any issues with my plants grown from seed (in coco), only the clones I had got from my clinic.

You can check my thread out over in strains and hybrids for my grow report on the many strains I had.

 

[Thundurkel]

yea bro I would get that PH to 5.2 - 6.2 for coco now that I keep my ph between that my girls are healthier than I've ever seen! No problems what soever and I'm running 6 different strains being fed the same thing!