Always more to learn. Any help on this one this time gentlemen ?

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Mooregrow

Active Member
Every grow a new problem comes up it’s always a learning curve from deficiencies to pests

so this time I had some n toxicity which was strange because I grow in coco at about 1/4 strength and suffer more from deficiency’s in the past then a little bite burn so I done a flush cut back on the feed and now the leafs are dying as you can see from pics. Actually got worse after the flush
Checked for pests nothing
Ph 5.9 this is cheese haven’t grown before

anyone had these symptoms
 

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P

Phytoplankton

Well-Known Member
I’ll start by saying that coco is not my strongest suit, but what I see is the plant is hungry. What you may have called toxicity could have been a lockout from accumulated salts, allowing assimilation of some nutes, but not others. Now that you’ve flushed out the salts, the plants are hungry, and since you cut their feed waaay back, the plant(s) want nutes.. let’s see what others think.
 
medidedicated

medidedicated

Well-Known Member
Going to need to know feeding habbits, how many times a day fed, is it bone dry or dried out in the top when you water again? Based on the runoff setup might be a clue youre not giving them ample runoff like they need.

And being so low in nutes idk what EC youre feeding but reminds me of when I dropped ec and juiced them up to fix issues and then back down. Not 1/4 strength though lowest I done with success was 1.1ec .5ec tap. Thats another thing what is the water source and its ec? Ec of the runoff?

Whats the nute brand? Key things that might help other help you, Im no pro so it probably wont be me solving it but sometimes its something basic that I actually can. Thats what I like about coco.
 
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Mooregrow

Active Member
Thanks for the replies everyone I feed 4L each a day in 25L pots always have loads of run off in feeding exactly like any other grow I have done with no problems that couldn’t be fixed or at last know what the issue is to be able to fix it for example pest of cal mag or nitrogen that common things

it’s just getting worse
At this point if I can’t figure out what I’m thinking am I just wasting my time

thinking about trying a flush again

using duch pro a and b bloom was using some big bud but just going with a and b till I know what’s going on
 

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MickFoster

MickFoster

Well-Known Member
Mooregrow said:
flush with plane ph water I know it’s a debatable topic but it’s always worked in the past

I agree in theory you shouldn’t need to but it still seems to happen
Click to expand...
It's not a debatable topic.........never, ever use plain water in coco.........it messes up the cation exchange capacity by stripping calcium and magnesium.
You even said it got worse after the flush........and you want to do another?
 
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Mooregrow

Active Member
MickFoster said:
It's not a debatable topic.........never, ever use plain water in coco.........it messes up the cation exchange capacity by stripping calcium and magnesium.
You even said it got worse after the flush........and you want to do another?
Click to expand...
Fair enough
So what would you sujest?
add calmag in with normal feed and hope for recovery ?
 
Kushash

Kushash

Well-Known Member
Might help to raise the PH.
5.9 is on the low side and if the test equipment isn't accurate, it could be even lower.
 
Star Dog

Star Dog

Well-Known Member
I've seen don't use water on coco where does that come from?
From the link above.
"Before adding seedlings or plants to your coco/perlite mix, you should always verify that the EC is in the appropriate range for their stage of growth. Since the buffering solution is high EC, you may need to rinse the coco with plain water prior to adding plants."

After googling cation sites and water is says water might rinse nutrient but not cec sites?
 
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