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HELP! First time grow in coco coir, don't understand what's wrong.

A

arsh95

New member
Bubba Kush Femininzed
My lights are 150W flutronix led lights full spectrum

The ph is 6.3
EC 2124
PPM 1126

I DONT UNDERSTAND but there have been this spotted growth on the plant since. It got it's first leaves, don't understand why this is happening. As I have given them fertilizer of macro, micro and grow mixed in with cal mag water. The only 2 mistakes that I have made before starting my grow is i did not give my grow media proper drainage by adding perlite to it, also starting the grow in a big pot then the small size. Then I did not buffer my media in cal mag solution before starting the grow.
For these 2 problem i am always using cal mag infused water and also adding Dr. earth by iffco urban for the roots.
what I think now is that the only problem can be root rot. For that I plan to add hydrogen peroxide.
My main thing i dont understsnd is why are the leaves become yellowish with very little tint of dark green on them. i thought there might be pests problem with the plant, for that I used Dr. Neem and Dr. Green by iffco urban. Which i foliar sprayed to the plant leaves.

Please advice, if this is my correct diagnostics or is there any other problem?
 

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I'm not 100% sure about the spotted growth, but the charred leaf tips look like nutrient burn to me. You may be giving the plant too much too soon and it's struggling to process it all. I grow in coco/perlite as well and found that a gentle touch is best. Generally I don't use calmag unless the plant is really showing signs of needing some. Otherwise normal nutes seem to be fine starting at 3 weeks or 3rd set of leaves. I aslo don't pre-soak my coco in calmag prior to placing the seeding there. My reasoning is the plant has enough built in food for about 3 weeks so it's not really going to care about what's in the "dirt" until then.
 
Slow down a bit and never treat for pests unless you know for sure what if any you have. I dont think you have root rot

Coco needs to be soaked imo to be safe even if it says buffered. Why not. I would be more likely to add calmag with coco and led lights.
If you are re-potting be sure and add perlite
 
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Id do nothing to that plant but pH'ed water for a minute. What you got there is yourself chasing problems and creating more problems that you didnt need to have, makes sense, straight case of over loving.

Is that really Coco that you didn't mix perlite into but has perlite for not mixing any into and some big clumps of things that look like rocks or dirt? are you sure it's coco? could you tell us the brand? Pictures of the bag?

that's where'd I would start.
 
An EC of 2100 is extremely high IMHO at that stage of growth. Some of mine don't like more than 1800 in full stretch into flower...much less in veg.
 
Yes the coco has been soaked in tap water before being used for planting. It came as a block when I got it.
Yes, I have thought about it. When re-plotting, I will be using coco coir buffered in calmag mixed with 50% perlite.
 
I can agree with you that I have created this problem myself, I got carried away with the fact that my plant would require nutrients.

I realised later on that I require perlite. So, I added perlite to the top soil and mixed it with the coco. The big lumps of things could be the organic fertilizer that I used in the initial growth stage, when I was having trouble sourcing nutrients. That's when I thought i would like to go organic, but then I found the fertilizers and removed the organic fertilizer matter from top soil, the leftover lumps must be from that now. Yes, I can confirm the fact that it is coco and its from toker grow kit.
I have added the picture of the coco brand, I am using at present.
 
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The coco that I used for growing my plant.
 

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Yes, I agree. I also feel this high EC is because of salt bulit up cause the maximum EC I added into the plant was 1465 EC.
 
What exactly is in that brick? Most are labeled as coco coir. Yours says "c peat". Is there peat moss in there? Peat will store water more that coco, not in a good way imo. A brick of coco coir should be soaked in water, rinsed several times to remove sea salt and sand, then buffered with calmag. I did that process only once and decided that my time was better spent elsewhere. From then on I have used Mother earth coco perlite 70/30 in bags. I don;t rinse that but I do add a good dose of calmag when the pots are set up at a rate of 10ml/gallon, one gallon/3 gallons of coco/perlite. Coco will bind Ca+ and Mg+ so it needs to be saturated so the plants have those nutrients to use. The perlite is important to have in the mix. Your pix say to me calcium deficiency, and pH problems. Incorrect pH can lead to other nutrient problems. Idk what organic ferts you used, I prefer to get everything from the bottle. That way I know what is going into the pots. I think I am a bit of a control freak when it comes to that. I also think you have over watering, and a touch of loving them to death. They are resilient plants so keep them going. Next time start off with a better mix for your media. Have you checked the pH of the runoff? That may give you a better handle on where they need to go from here.
 
Is that runoff EC?

I don't bother measuring that. I don't remember what it is supposed to be relative to your input.

I also don't bother measuring runoff pH...it's far too inaccurate here.
 
After seeing the label and reading your response I'd up that pH'ed 6.5 water only recommendations for the next month, stop adding nutes for a hot minute and just leave it alone. I'd also stop watering that small plant in that large bucket to runoff treating it as a soil grow.

Have some patience and it should recover.
 
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