Nitrogen toxicity in organic grow?

just curious how likely it is to get nitrogen toxicity( or any nutrient toxicity for that matter) if you're only using organic soil, PhD RO water w calmag and an organic amendment every couple of weeks.
Plants are a month old in veg and showing signs of what I think might be nitrogen toxicity. But just want to be sure that's a possibility.
The amendment I'm using is growilla veg by botanicare. 1/2 cup evenly spread on top of my 5 gallon smart pots.
The soil I went with is fox farm ocean forest.

Pics with grow light distort colors, you need pics with another light source that shows the actual colors.

It's spotty but many of the older fan leaves have a darker shiny color to them. That and the random clawing look on some of them has me believe it's nitrogen toxicity.
So assuming it is, I'm wondering where I could've gone wrong here considering it's strictly an amendment I'm using...
There has been 2 occasions where I underwatered. Wondering if the lack of water might have made the mix" hot"?

I am also having issues with what I think is nitro toxicity / nute burn. I am a first time grower and not looking to get too heqvily invested in this yet. I am growing in FFOF with no extra nutes added and always make sure to leave my tap water out for 24 hours to let the chlorine content evaporate out. 3 of my 4 plants are clawing. Is FFOF maybe a bit too hot for seedlings? My plants are only about a month old from germination to now. I only have about 4 nodes in.

I also went ahead and moved them into smart pots to help the roots keep healthy. Any help is appreciated.

Yeah I called the hydro store and confirmed that organic amendments can still cause nutirient burns/toxicites. They said to just pour extra water and wait it out. Should recover no problem.

Even with dry nutrients, you should test the waters first with half or a third of recommended feeding.

How long did the burn take to show up after top-dressing/water?

Before I even knew recommended dosing I was only using pinches of this stuff evenly over the tops. But I noticed some of the lower leaves looked like they were yellowing and necrotic from either a nitrogen or phosphorous deficiency. In hind sight it was probably just from transplanting the clones initially as I usually see a few leaves turn like that after transplanting up. But either way, once I saw the recommended dosage on the botanicare site I figured they were showing deficiencies. At this point there were still one yellowing tips towards the new growths. So about a day after the feeding of 1/2 a cup (the recommended dose) is when I saw the dreaded claw on random leaves. I also noticed the darker fan leaves on the older leaves. So yeah, it's been about 3 days now since that feeding, nothing has gotten worse since then but definitely not at their optimal health either.

Today I'll probably water them. As the pots should be pretty dry by now. It's been about 3 days since last watering. Well see tho, I know with any problems these ladies don't drink as quickly so hopefully enough time has passed to water again.

@jmoneygrows



Derived from:Feather meal, Alfalfa meal, Seabird guano, Langbeinite, Fish bone meal, Bat guano, Kelp meal, Oyster shell, Volcanic ash, Earthworm castings


It's going to break down over a 1-2 week period, so keep an eye on the plants and adjust accordingly.

Yeah I noticed that too. Thanks for the help!

It's not N toxicity it's nuts burn. Lower your ppms by a bit.

Thai_Lights said:

It's not N toxicity it's nuts burn. Lower your ppms by a bit.

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Ppms?
This is an organic grow... no nutrients being added besides the amendment.
How do you dial back ppms on a dry amendment? Lol

Sorry. Sifted through your thread quickly thought I read botanicare and I assumed it was synthetics.

Thai_Lights said:

Sorry. Sifted through your thread quickly thought I read botanicare and I assumed it was synthetics.

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All good man. Trust me if it was hydro or coco, I'd be dialing the ppms back first!

SPLFreak808 said:

Even with dry nutrients, you should test the waters first with half or a third of recommended feeding.

How long did the burn take to show up after top-dressing/water?

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This.

jmoneygrows said:

Yeah I called the hydro store and confirmed that organic amendments can still cause nutirient burns/toxicites. They said to just pour extra water and wait it out. Should recover no problem.

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That's actually a bad idea. Depends on the source. If its water soluble then watering will make it worse.

I would just dig the plant up and cut the medium with inert soil to weaken it.

whitebb2727 said:

This.

That's actually a bad idea. Depends on the source. If its water soluble then watering will make it worse.

I would just dig the plant up and cut the medium with inert soil to weaken it.

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Not a bad idea. I just don't know if the damage has already been done. Uprooting in smart pots is also the biggest pain in the ass. Plus I have a trellis net down now. Damnit!

jmoneygrows said:

Not a bad idea. I just don't know if the damage has already been done. Uprooting in smart pots is also the biggest pain in the ass. Plus I have a trellis net down now. Damnit!

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Well when I used to use miracle grow it had problems of being hot. The trick was to keep it on the dry side.

Watch your watering. It may help a bit.

Will do man thanks!

Can Fox Farms Ocean Floor be considered a hot soil for a seedling?

NoobieDoobieDoo said:

Can Fox Farms Ocean Floor be considered a hot soil for a seedling?

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Yes, fox farm ocean "FOREST" is a hot soil, they sell light warrior for seedlings.