Nitrogen toxicity?

McShnutz

McShnutz

Well-Known Member
dizzygirlio said:
I love your DWC set up. I'm gonna try this in a pot like that sometime.

I was just wondering about the fan, because the 2 plants in the front are kinda curling but the one in the back is fine. I'm not super experienced, but maybe it's not nitrogen toxicity but wind exposure? Like, could it be because the 2 in the front are getting more wind than the one in the back or no? Probably not, but it was just a thought.
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Your thinking is on the right track, but the leaves would have frilled tips along the serrated edge and curl downward from high wind which causes excessive transpiration. Additionally, there would most likely be some necrosis from accumulated salts. But this too is dependent on nutrient strength.

The OP's leaves are drooping. Tell tail sign of low dissolved 02 and unhappy roots.
 
McShnutz

McShnutz

Well-Known Member
NordicX said:
Good evening, this are my girls now. They are in flower day 5. I got my water temperature under control it´s now
21 degrees Celsius = 69.8 degrees Fahrenheit.

View attachment 5098588
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Good to hear your resivore temps are back in order. And I can clearly see they've grown since, keep it up! Don't over fertilize. It's always safer to under feed than over. You can always give them more nutrient if they need it. Over fertilizing will slow or stop growth and set you further back.
So from here on out, before you do anything to change what you've got going, always visually assess your leaves and stem elongation. The plants give hints as to what they like or what the need. Gotta learn to read the plant!
 
N

NordicX

Member
McShnutz said:
Good to hear your resivore temps are back in order. And I can clearly see they've grown since, keep it up! Don't over fertilize. It's always safer to under feed than over. You can always give them more nutrient if they need it. Over fertilizing will slow or stop growth and set you further back.
So from here on out, before you do anything to change what you've got going, always visually assess your leaves and stem elongation. The plants give hints as to what they like or what the need. Gotta learn to read the plant!
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Girls now. Girls.jpeg
 
W

wallywonks

Well-Known Member
I don't see any issues other than the light looks dim. In DWC the leaves get heavy. Mine were droopy like that in the beginning and in 2 to 3 weeks started to take off and look normal. I had my ppms at 500 the first couple weeks then iup to 650 to 700. In late veg I pushed it up to 800 to 900. I uses Maxibloom nutes from the start and in Week 15 from seed look like thus. Ppm now only 850. All i used was Maxibloom, Calimagic and Hydroguard 20220328_100849.jpg
 
N

NordicX

Member
wallywonks said:
I don't see any issues other than the light looks dim. In DWC the leaves get heavy. Mine were droopy like that in the beginning and in 2 to 3 weeks started to take off and look normal. I had my ppms at 500 the first couple weeks then iup to 650 to 700. In late veg I pushed it up to 800 to 900. I uses Maxibloom nutes from the start and in Week 15 from seed look like thus. Ppm now only 850. All i used was Maxibloom, Calimagic and Hydroguard View attachment 5110992
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But you have very big girls mine are not so huge, so i can´t give them as much nutrients than you can. Your plants look very good! My light is HPS 600W.
 
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