Urgent help needed please

Fish scale

Fish scale

Well-Known Member
Does anyone know what's wrong with this plant? It's grown in coco, feeding daily until run off, PH 6.0, the EC was at 1.0 EC for 2 or 3 weeks and it was growing fine for ages and then it started showing signs of burning up or maybe it's a potassium deficiency? so I started giving it 1.2 EC and it's only getting worse. I've never had a plant go like this on me before. I know it looks like nutrient burn but don't the leaves normally go dark green before it starts burning up?? It looks like a potassium deficiency to me but I don't know how to fix it.
 
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Fish scale

Fish scale

Well-Known Member
hotrodharley said:
That’s not deficiency. You’re right about nute burn.
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But it was growing fine at 1.0 EC for about 2 or 3 weeks and then it started burning up at 1.0 EC after growing healthy for 2 or 3 weeks so I thought I would give it 1.2 EC. Should I lower it back to 1.0 EC?
 
manfredo

manfredo

Well-Known Member
Did your coco get dry at any time? What's your EC look like at runoff? Do you have powerful lighting?

I'm new to coco but have had some similar issues. I too thought my EC was too low, but raising it only made things worse. Everything looked fantastic for me til week 5 of flower, and then I started getting some crispy fan leaves.

I flushed and I am adding additional feedings....And today I am lowering my EC, in week 6. I'm using GH Flora series....you?
 
Fish scale

Fish scale

Well-Known Member
manfredo said:
Did your coco get dry at any time? What's your EC look like at runoff? Do you have powerful lighting?

I'm new to coco but have had some similar issues. I too thought my EC was too low, but raising it only made things worse. Everything looked fantastic for me til week 5 of flower, and then I started getting some crispy fan leaves.

I flushed and I am adding additional feedings....And today I am lowering my EC, in week 6. I'm using GH Flora series....you?
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No I don't let the coco get dry, The EC is coming out low at 0.5 EC and going in at 1.0 EC. And yeah I have pretty powerful lighting

I'm using A&B for coco :)
 
Fish scale

Fish scale

Well-Known Member
I can always back off on the feed and start giving them 1.0 EC again and see how they respond to it? But they are nearly a week into flower and I thought 1.0 EC was pretty low?
 
dwc420letsgo

dwc420letsgo

Well-Known Member
Ok, so I’d try raising the EC a little bit. May just be a potassium deficiency. I use tap water but mine comes out at around 0.2 so not too bad, but I do feed around 1.9-2.0, with a “flush” around week 7-8. But my plants look healthy throughout so maybe raising EC can help you out.
 
Fish scale

Fish scale

Well-Known Member
dwc420letsgo said:
If your EC is coming out at 0.5, I highly doubt you are burning your plants with too much nutes but I could be wrong.
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That's why I thought it could be a potassium deficiency because the EC is coming out pretty low. And when you google potassium deficiency it comes up with this picture which looks very similar to my plant. They were doing fine on 1.0 EC for 3 or 4 weeks and then they started going messed up.

5bc291c9d316217c0dcab934134dec7e.jpg
 
dwc420letsgo

dwc420letsgo

Well-Known Member
Fish scale said:
That's why I thought it could be a potassium deficiency because the EC is coming out pretty low. And when you google potassium deficiency it comes up with this picture which looks very similar to my plant. They were doing fine on 1.0 EC for 3 or 4 weeks and then they started going messed up.

View attachment 5316267
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Seems like you did your research well! If you end up raising EC, update us later on the outcome. You got this dude!
 
medidedicated

medidedicated

Well-Known Member
What are the temps like? By the canopy? Noticed not mentioned, I am newer to growing but looks rough or would probably help to mention to weave that out.
 
Fangthane

Fangthane

Well-Known Member
If they're not already using Pro-Tekt or some other potassium silicate product, could that possibly help? Seems like a cheap and easy potential fix that shouldn't hurt the plant either way.
 
medidedicated

medidedicated

Well-Known Member
Fish scale said:
between 26c and 28c dude, 78f to 82f
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What coco you using? Is it rinsed/buffered? I have yet to see a case of that being an issue but just to weave that out, usually someone always asks me that on my coco threads. Do you add calmg to feed?

Edit: Yea I see no listing how many feeds per day that is important info. How many?
 
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