21 day old are dying quick. bottom leaves going brown

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zafabafa

Member
I started some seed some weeks ago but they went down hill very fast.

So I started new ones and now these having exact same issues only it took longer.

The new plants did great for 21 days. Exactly the same symptoms and went from perfect to this is just 2 days.
Giving them 1 watering a day 20-30% run off with 600 PPM canna A+B, roots and calmag. Run off PH is good (+/- 6.0). PPM is around 600.

Coco perlite mix outside grow.

Its going to the upper leaves in quick rate??? im dying here and so are my plants.

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Beachwalker

Well-Known Member
I deleted what I said because I noticed it was Coco and I don't get involved with it (but I do suspect some over-watering? Plus kind of light green for a plant being fed that heavily?)

I recommend (for ease and simplicity) doing your first grows in soil, preferably a fox farm or other decent quality product, I recommend the kiss principle!

And then with a few victories under your belt you go from there, decide you want Coco Hydro whatever but it doesn't hurt to learn the basics in soil ?
-good luck!
 
Z

zafabafa

Member
Beachwalker said:
I deleted what I said because I noticed it was Coco and I don't get involved with it (but I do suspect some over-watering? Plus kind of light green for a plant being fed that heavily?)

I recommend (for ease and simplicity) doing your first grows in soil, preferably a fox farm or other decent quality product, I recommend the kiss principle!

And then with a few victories under your belt you go from there, decide you want Coco Hydro whatever but it doesn't hurt to learn the basics in soil ?
-good luck!
Click to expand...
Thanks, I did my first grow in coco as well and it went great. Only difference is I started them in hot soil and then into 4 gallon air pots.

Over watering seems kinda odd as it dries up quickly.

I'm thinking nitrogen def because the older plants are still having the same problems and I didnt up my nutes. Canna recommend 1.0-1.5 EC so thats between 700-1000 ppm. I was scared to burn them but I think its the other way round here.

Just my 2 cents of no real knowledge and just reading the symptoms.
 
ANC

ANC

Well-Known Member
How many holes in the bottom of the pot?
I like my pot to be as close to being an open hole on two sides as possible.
If a pot can drain freely, you can not overwater coco coir.

I'm going to give you the method I use for small plants.

Make a batch of fertilizer. Get a bucket or tub that is just big enough to hold your pot.
put that into a larger tub that can collect the full volume of the fertilizer batch.

I use a little microwave rack standing in the large tub to place the plants on while they drip dry a bit before being returned to their trays.

Put some solution in the tub and soak your plant all the way. Leave it for a minute or so for salts to dissolve into the solution if the medium is hotter than the feed. Lift the plant out, but try to catch most of the runoff in the dipping tub. Then place it on the rack while I start with the next plant.

Measure the ppm of the dipping bucket with the runoff in. If it is within, say 100ppm of what you fed, you can dip another plant in the same solution by just topping it up a bit. Allways dip smaller and more delicate plants first, and stronger plants in the second dip. Until the plants are pretty big and strong, I don't dip more than twice. then throw it out into the big tub.

When you are done, measure the volume that stayed behind in your bags and make a note.

When you do this, you can see if your pots are getting hot (IT DOES, even if feeding dilute feedings). You will be able to tell when to feed less to get the ppm of the runoff water (and what stayed behind in your pot) spot on where you want it.

If some plants are not drying out well, dip only the bottom their of their bags, to suck off the stale water, but do not skip them or they will never get up to speed with the rest of your plants.
 
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zafabafa

Member
ANC said:
How many holes in the bottom of the pot?
I like my pot to be as close to being an open hole on two sides as possible.
If a pot can drain freely, you can not overwater coco coir.
Click to expand...
It has plenty holes, I even drilled extra holes. drain is excellent with hydroton in the bottom.
 
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Tim1987

Well-Known Member
Dude!
It's your ppm. You're frying them.
I run 100% coco coir. My nutrient is a 5.3.9. I don't feed my plants 600ppm until they're 2-3 feet tall!!
Cut the feed immediately.


Try 200ppm. Just give them water, for a couple days, to flush the salts out. Then start feeding at 200ppm. Don't be surprised if you end up having to go a little lower.
 
Z

zafabafa

Member
Tim1987 said:
Dude!
It's your ppm. You're frying them.
I run 100% coco coir. My nutrient is a 5.3.9. I don't feed my plants 600ppm until they're 2-3 feet tall!!
Cut the feed immediately.


Try 200ppm. Just give them water, for a couple days, to flush the salts out. Then start feeding at 200ppm. Don't be surprised if you end up having to go a little lower.
Click to expand...
canna coco feeding schedule.jpg

Am I reading this wrong? and if im overfeeding why are they so pale, wouldnt they go dark green?
 
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Tim1987

Well-Known Member
Since finding this article several weeks ago, I've shared it out a lot.
CANNA know coco coir, better than anybody. This article is published by CANNA.
The author gives a fantastic break down about coir. As well as how it functions.

Honestly dude. I have never fed that strong at that size. Ever.

Coco coir varies a lot as well. Coconut, to coconut. But also the way it's prepared for sale. Manufacturer, to manufacturer.
 
Z

zafabafa

Member
Tim1987 said:
You can believe what you like man. But the proof is in the pudding.

Are your leaves dry like sandpaper?
Did you wash your coir?
Did you buy in block form? Or bag form?
Click to expand...
Only the brown is going dry.

The coir comes in bages pre washed 2 times and I did a flush myself. (Plagron coco coir)

It's not that I dont believe you, its that im feeding way less and then the symptoms.

The points never curl up, always down and only in the oldest growth.
They are super pale and yellowing.
Leaf is paper thin and feels really light.
 
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Tim1987

Well-Known Member
As I stated. My nutrient is a 5.3.9. It's what I use seedling, to finish. My fertilizer, is by no means strong. I don't use calmag at all either. Neither do I buffer my coir, with lime.

These plants were getting 5-600ppm a feed. I feed on a weekly schedule too. So 600ppm was the beginning of the week. Would have been dropping to around 3-400, by the end of the week.

What's the npk on your bottle of Canna? It can't possibly be less than 5.3.9?? Maybe the potassium. That's about it.

My point is. We probably have a very similar npk ratio. We're both running coir.
Do you think these plants are starving?
They were 6 weeks from seed.
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Tim1987

Well-Known Member
Two weeks later.
I over nuted at 900ppms.
1523225421788-137646523.jpg

See what I mean?
Do they look hungry to you?

Less is more man. More food, doesn't make a plant bigger.
 
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Tim1987

Well-Known Member
zafabafa said:
They look great.
Canna A+B is 5-4-3
I think my npk is 9-4-5 if im not missing anything.

My calmag is 4-0-0.
Click to expand...
Yep spot on. 9.4.5.
Make it a 5.4.5.
Honestly mate. I'd cut your calmag right out. It isn't necessary.

I suggest plain water to get your waste ppms down. Get them below 200.
Then just start your 5.4.5 at 200ppms, and you should be OK.

If not just report, back to this thread.

Good luck OP
 
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