Hello all. I've had these girls into gallon smart pots with Coco Loco for about a week. 3 or so das ago they started to show heavy nitrogen toxicity with darkening leaves purpling stems from stress and the growth has been stunted a bit. I have them feeding quarter strength Advanced nutrient Coco bass and B with quarter strength Voodoo Juice and quarter strength B-52 and that's at about 310 PPM. I'm really just trying to figure out what this color is on my leaves. to me it looks like they're coming back from being dark but then the crinkled spots don't look like recovery...
Nitrogen toxic? I need help.
- Thread starter Tparker
- Start date
OK so any suggestions for the leaf wilting if it's not nitrogen.
Bugeye
Well-Known Member
I did not say it wasn't nitrogen. Your pictures suck so I'm not speculating. My only point was that you aren't going to gauge the success of any changes by looking at older leaves that were already damaged. You seemed to be saying that you were looking for signs of recovery on them.
Cx2H
Well-Known Member
You feed them ca:mg?
Is that Coco? Nvm I see it
What's the pH when you pour?
They don't look too bad honestly.
New growth will be indicator, old affected growth will die off at some point, no coming back.
You want pH around 5.8.
Leaf twisting, contortion can happen from pH being out of range. pH bleaching occurs from huge pH shift.
Is that Coco? Nvm I see it
What's the pH when you pour?
They don't look too bad honestly.
New growth will be indicator, old affected growth will die off at some point, no coming back.
You want pH around 5.8.
Leaf twisting, contortion can happen from pH being out of range. pH bleaching occurs from huge pH shift.
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I water with 5.8 but I guess I just hasn't worked it way down yet. I'm mainly concerned with the few wilting spots I'm seeing because they just popen up over night. And no calmag because I figure the coco base Nute had enough cal and I don't want to over do it
Cx2H
Well-Known Member
Ca:mg?? It is the #1 def in Cannabis growing.
Rust circles and spots.
Cx2H
Well-Known Member
Coco binds calcium in the medium, so it never makes to the plant unless you add more.
"Furthermore, calcium and magnesium are both naturally attracted to bind to coco coir, causing them to become unavailable to plants. To compensate for this, it is important that you add some form of a calcium/magnesium supplement to your nutrient solution" @Tparker
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Coco binds calcium in the medium, so it never makes to the plant unless you add more.
"Furthermore, calcium and magnesium are both naturally attracted to bind to coco coir, causing them to become unavailable to plants. To compensate for this, it is important that you add some form of a calcium/magnesium supplement to your nutrient solution" @Tparker
OK thanks for the advice... would using it as a foliar feed work just as well?
MichiganMedGrower
Well-Known Member
Just have to say. Calcium and magnesium are 2 seperate elements and have different symptoms.
Cal/mag is a product designed for ro water to put the stripped out minerals back in a usable ratio for plants.
Mag shows in the veins as striping on the lower leaves first as it is immobile. Calcium rust spots on new leaves as it is mobile.
Cal/mag is a product designed for ro water to put the stripped out minerals back in a usable ratio for plants.
Mag shows in the veins as striping on the lower leaves first as it is immobile. Calcium rust spots on new leaves as it is mobile.
MichiganMedGrower
Well-Known Member
Looking at the new pics I think the plant is showing a phosphorous deficiency and some micronutrients. Likely from either underfeeding as stated above or by imbalanced nutes.
I have no experience with advanced other than knowing the don't include all needed elements in each bottle. I like a balanced complete grow ratio for the whole grow in potting mix.
I have no experience with advanced other than knowing the don't include all needed elements in each bottle. I like a balanced complete grow ratio for the whole grow in potting mix.
MichiganMedGrower
Well-Known Member
https://www.google.com/search?q=marijuana+garden+saver&ie=UTF-8&oe=UTF-8&hl=en-us&client=safari
Good easy useful guide to have.
Good easy useful guide to have.
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