Does this look like nute burn or deficiency to you guys?

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veloci

Member
Sorry to bother you fellas but I can't tell with most chart if this is a Pottasium deficiency or nute burn and need someone with more experience.

I'm entering week 5F. I'm giving her Advanced Nutrients Micro + Grow + Bloom base line (auto regulates pH perfectly) and adding Big Bud flowering booster now (PK booster).

The top of the plant has started to show these colours (it seems to progress on the way down).

My first guess is it's nute burn because of the burnt tips, although I'm feeding what the manufacturer says, which amounts to about 1200ppm (2300ppm at runoff which I've read can be managed by the plant at this stage?).

It's also a huge plant that I've tried to scrog in a 8L (9gal) pot. And it kinda looks like Potassium deficiency in some charts. So maybe it could be that?

Any help would be appreciated.

Photos:
http://imgur.com/a/lQv1Zyz
 

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simpleleaf

simpleleaf

Well-Known Member
veloci said:
Sorry to bother you fellas but I can't tell with most chart if this is a Pottasium deficiency or nute burn and need someone with more experience.

I'm entering week 5F. I'm giving her Advanced Nutrients Micro + Grow + Bloom base line (auto regulates pH perfectly) and adding Big Bud flowering booster now (PK booster).

The top of the plant has started to show these colours (it seems to progress on the way down).

My first guess is it's nute burn because of the burnt tips, although I'm feeding what the manufacturer says, which amounts to about 1200ppm (2300ppm at runoff which I've read can be managed by the plant at this stage?).

It's also a huge plant that I've tried to scrog in a 8L (9gal) pot. And it kinda looks like Potassium deficiency in some charts. So maybe it could be that?

Any help would be appreciated.

Photos:
http://imgur.com/a/lQv1Zyz
Click to expand...

I don't use your nutes and am not familiar with them or their aggregated NPK, but 1200 PPM is high. The runoff being so much higher indicates salt build up, I'd flush to reduce. I'd also try to understand why salts are building up so much, but until then flushing when they do should help.

Good luck.
 
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Treesomewanted77

Well-Known Member
As stated you’re feeding pretty hot and have buildup if the runoff is way higher than the input. Never use what the manufacturer recommends cut in 1/2 at very least but normally start at 1/4 what they recommend and work up from that. The plants will only feed heavy when they start stretching then they slow down a bit on the food. I would flush with 1/4 strength till your runoff comes down to within 300ppm of the input. And make sure your getting adequate runoff every feeding to prevent any buildup.
 
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93OG

Well-Known Member
I don’t see any signs of nitrogen toxicity. It’s usually preceded by clawing and dark shiny leaves. Your leaves look kinda.light green. The whole plant picture looks well fed but the all closeups look under fed to me.
 
V

veloci

Member
hotrodharley said:
I see probable nitrogen toxicity and phosphorus deficiency. Those can be related.
Click to expand...
Well this nutes line increases N through veg phase but contrary to what I'd think it never drops the dossage of it during flower phase. I did notice less yellow leaves during stretching with this plant (actually none, which is a first time for me) in which case that would have helped, but maybe now that it's not being used as much it built up?

Anyways the Advanced Nutrients guys also suggested to flush, so I did using pH water only and managed to bring the runoff ppm down to 600ppm. They also suggested to water until 20% runoff moving on, which I wasn't doing either.

I guess I have to wait until substrate dries a bit and continue normal feeding afterwards? Maybe cutting it down a bit (it's a really big plant I thought it could handle the recommended dossage fine).
 
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