Can anyone tell me what is causing this leaf curl

[Hollatchaboy]

Thats why I had asked about the LUX app.. i assumed it was heat over intensity being a blurple light... but yea id expect similar symptoms with the addition of bleaching possible as well.

But he said his lux is at 20k at canopy level.. which is pretty low even with a 5-10k variable because its not a genuine light meter reading. So who knows.



If your feeding schedule recommends A throughout, I wouldn't completely remove it.
The NPK numbers are the relative weight of each element in the solution. The difference between your A and B solution is 3% nitrogen, its not some crazy huge difference... especially once they become diluted in water.

I didn't notice the blurple... lol... yea I'm guessing not light intensity then. His temps seem pretty

That doesnt make sense because I need to lower my N to 2 at the most during flower and the base A has 4 N therefore it has to be cut and just use base B and other pk boosters

I ran the Lucas formula on my last run.. gh 3 part only using the micro and bloom. Micro is N(5) bloom is N(0). I never had a problem with N toxicity or deficiency. Or any others for that matter.

 

[Hollatchaboy]

correct me if I'm wrong please but does anyone think that alot of those grow schedules are nute companies just wanting you to use it up and buy more ya know lol

Maybe some... especially the additives.

 

[Hollatchaboy]

I didn't notice the blurple... lol... yea I'm guessing not light intensity then. His temps seem pretty

I ran the Lucas formula on my last run.. gh 3 part only using the micro and bloom. Micro is N(5) bloom is N(0). I never had a problem with N toxicity or deficiency. Or any others for that matter.

Lucas is the shit! Lol

 

[BluntMoniker]

If your supposed to use an A and B, or Grow and Bloom as recommended, I highly suggest you do it. Personal experience saying the same thing you did.

Stopped using the Grow when I used Bio Bizz nutes.. ended up with severe N deficiency that took me almost until harvest to get sorted.

Like I said, those numbers are relative to their weight in the solution... from 1N to 4N is a 3% increase, not a 4x increase. Its more about concentration in your final solution than the NPK numbers themselves.

Nute companies want you to use their nutrients, so they recommend you use 25% more than necessary per feeding (made up figure for example) and suggest PK boosters and flavor enhancers and w.e else as an additive... but the base nutrients are needed together if they are recommended together as part of a 2-3 part base nutrient

 

[Hollatchaboy]

If your supposed to use an A and B, or Grow and Bloom as recommended, I highly suggest you do it. Personal experience saying the same thing you did.

Stopped using the Grow when I used Bio Bizz nutes.. ended up with severe N deficiency that took me almost until harvest to get sorted.

Like I said, those numbers are relative to their weight in the solution... from 1N to 4N is a 3% increase, not a 4x increase. Its more about concentration in your final solution than the NPK numbers themselves.

Nute companies want you to use their nutrients, so they recommend you use 25% more than necessary per feeding (made up figure for example) and suggest PK boosters and flavor enhancers and w.e else as an additive... but the base nutrients are needed together if they are recommended together as part of a 2-3 part base nutrient

You can run gh 3 part without grow part(Lucas formula) through the whole grow without problems. Maybe some strains will reject it but it's definitely possible.

 

[Hollatchaboy]

If your supposed to use an A and B, or Grow and Bloom as recommended, I highly suggest you do it. Personal experience saying the same thing you did.

Stopped using the Grow when I used Bio Bizz nutes.. ended up with severe N deficiency that took me almost until harvest to get sorted.

Like I said, those numbers are relative to their weight in the solution... from 1N to 4N is a 3% increase, not a 4x increase. Its more about concentration in your final solution than the NPK numbers themselves.

Nute companies want you to use their nutrients, so they recommend you use 25% more than necessary per feeding (made up figure for example) and suggest PK boosters and flavor enhancers and w.e else as an additive... but the base nutrients are needed together if they are recommended together as part of a 2-3 part base nutrient

When you stopped using the grow, did you up the micro and bloom?

 

[Tmurrayftw]

If your supposed to use an A and B, or Grow and Bloom as recommended, I highly suggest you do it. Personal experience saying the same thing you did.

Stopped using the Grow when I used Bio Bizz nutes.. ended up with severe N deficiency that took me almost until harvest to get sorted.

Like I said, those numbers are relative to their weight in the solution... from 1N to 4N is a 3% increase, not a 4x increase. Its more about concentration in your final solution than the NPK numbers themselves.

Nute companies want you to use their nutrients, so they recommend you use 25% more than necessary per feeding (made up figure for example) and suggest PK boosters and flavor enhancers and w.e else as an additive... but the base nutrients are needed together if they are recommended together as part of a 2-3 part base nutrient

So even if I dont need any N I should still use it just because its a set of A and B nutrients? There are also flower stacker pk boosters and a k booster that use as well and the enzyme and flavor additives

 

[Hollatchaboy]

Id say still use it... just dilute it. You can use boosters to raise PK when needed

 

[BluntMoniker]

So even if I dont need any N I should still use it just because its a set of A and B nutrients? There are also flower stacker pk boosters and a k booster that use as well and the enzyme and flavor additives

You do need N. You always need all 3, just in varying amount during different stages of life.

 

[Tmurrayftw]

Id say still use it... just dilute it. You can use boosters to raise PK when needed

Well I'm still using the base B because it has 1N and together with the others i have a combo of 11 P and 9 K I figured that was a good ratio for flower per everyone's suggestions

 

[Tmurrayftw]

You do need N. You always need all 3, just in varying amount during different stages of life.

I understand that I'm in week 2 of flower and 3 on another plant I dont need alot of Nitrogen at this stage

 

[Raspberrykiwi]

correct me if I'm wrong please but does anyone think that alot of those grow schedules are nute companies just wanting you to use it up and buy more ya know lol

Yup lol

 

[Tmurrayftw]

This just put it all to rest for me lol

 

[BluntMoniker]

I understand that I'm in week 2 of flower and 3 on another plant I dont need alot of Nitrogen at this stage

Not needing a lot, and cutting out half of your AB formula are 2 different things.

But do what you would like.. but if I see a Tmurrayftw post in 2 weeks regarding yellow leaves... best BELIEVE your gonna hear some flack.

Just know, N toxicity would cause leaf TIPS (not edges) to curl down (not up), EXTREMELY dark green leaves that have a waxy sheen in appearance, and would not account for the tacoing, thin leaves, or damage being focused at the tops of the plant. But with that, ill leave you to make your decisions. Just be careful of confirmation bias...

You can run gh 3 part without grow part(Lucas formula) through the whole grow without problems. Maybe some strains will reject it but it's definitely possible.

That may be true... but he didn't say he uses Lucas lol. You said you used Lucas, then quoted yourself saying you use Lucas. He never said what brand he uses that I saw... just said he uses an AB formula, which are usually made specifically to work together.

Hes not using a Grow, Micro, Bloom, hes using a Grow A, Grow B, for veg and Bloom A, Bloom B for flower unless hes misspoke about his nutes being A and B ferts. He can't cut Bloom A because it has 4%N... Will not resolve his current issue, and will add more on top of it. But hey, guess we all have to fuck up a few plants to learn!

 

[Tmurrayftw]

Not needing a lot, and cutting out half of your AB formula are 2 different things.

But do what you would like.. but if I see a Tmurrayftw post in 2 weeks regarding yellow leaves... best BELIEVE your gonna hear some flack.

Just know, N toxicity would cause leaf TIPS (not edges) to curl down (not up), EXTREMELY dark green leaves that have a waxy sheen in appearance, and would not account for the tacoing, thin leaves, or damage being focused at the tops of the plant. But with that, ill leave you to make your decisions. Just be careful of confirmation bias...



That may be true... but he didn't say he uses Lucas lol. You said you used Lucas, then quoted yourself saying you use Lucas. He never said what brand he uses that I saw... just said he uses an AB formula, which are usually made specifically to work together.

Hes not using a Grow, Micro, Bloom, hes using a Grow A, Grow B, for veg and Bloom A, Bloom B for flower unless hes misspoke about his nutes being A and B ferts. He can't cut Bloom A because it has 4%N... Will not resolve his current issue, and will add more on top of it. But hey, guess we all have to fuck up a few plants to learn!

The reason I am cutting A is because it has no p or k its 4-0-0 and seeing as how im in week 2 and 3 I have little use for something that works out to 5-11-9 and I also understand that alot of people run their nute high as shit on the P and K i guess i wasn't very clear on the game plan lol I just want a few really good grows im not trying to burn my plants up and everyone kind of came to the agreement that it was N toxicity in the beginning so I believe that in week 2 and 3 flower you need less Nitrogen is that not the collective conclusion

 

[Tmurrayftw]

Not needing a lot, and cutting out half of your AB formula are 2 different things.

But do what you would like.. but if I see a Tmurrayftw post in 2 weeks regarding yellow leaves... best BELIEVE your gonna hear some flack.

Just know, N toxicity would cause leaf TIPS (not edges) to curl down (not up), EXTREMELY dark green leaves that have a waxy sheen in appearance, and would not account for the tacoing, thin leaves, or damage being focused at the tops of the plant. But with that, ill leave you to make your decisions. Just be careful of confirmation bias...



That may be true... but he didn't say he uses Lucas lol. You said you used Lucas, then quoted yourself saying you use Lucas. He never said what brand he uses that I saw... just said he uses an AB formula, which are usually made specifically to work together.

Hes not using a Grow, Micro, Bloom, hes using a Grow A, Grow B, for veg and Bloom A, Bloom B for flower unless hes misspoke about his nutes being A and B ferts. He can't cut Bloom A because it has 4%N... Will not resolve his current issue, and will add more on top of it. But hey, guess we all have to fuck up a few plants to learn!

There isn't a grow A grow B and a bloom A and B its simply a base A for veg and bloom and base B for veg and bloom the schedule calls for both from veg to bloom and their are pk boosters in that same line that I bought as well you can look it up its humboldt secret

 

[Hollatchaboy]

Not needing a lot, and cutting out half of your AB formula are 2 different things.

But do what you would like.. but if I see a Tmurrayftw post in 2 weeks regarding yellow leaves... best BELIEVE your gonna hear some flack.

Just know, N toxicity would cause leaf TIPS (not edges) to curl down (not up), EXTREMELY dark green leaves that have a waxy sheen in appearance, and would not account for the tacoing, thin leaves, or damage being focused at the tops of the plant. But with that, ill leave you to make your decisions. Just be careful of confirmation bias...



That may be true... but he didn't say he uses Lucas lol. You said you used Lucas, then quoted yourself saying you use Lucas. He never said what brand he uses that I saw... just said he uses an AB formula, which are usually made specifically to work together.

Hes not using a Grow, Micro, Bloom, hes using a Grow A, Grow B, for veg and Bloom A, Bloom B for flower unless hes misspoke about his nutes being A and B ferts. He can't cut Bloom A because it has 4%N... Will not resolve his current issue, and will add more on top of it. But hey, guess we all have to fuck up a few plants to learn!

Right...i was using that for an example because floramicro has 5N florabloom has 0N. So thats 5N through the entire grow. His ab mixed is only 5N. So his nutrient line isn't giving him too much N in my opinion.

 

[Hollatchaboy]

Not needing a lot, and cutting out half of your AB formula are 2 different things.

But do what you would like.. but if I see a Tmurrayftw post in 2 weeks regarding yellow leaves... best BELIEVE your gonna hear some flack.

Just know, N toxicity would cause leaf TIPS (not edges) to curl down (not up), EXTREMELY dark green leaves that have a waxy sheen in appearance, and would not account for the tacoing, thin leaves, or damage being focused at the tops of the plant. But with that, ill leave you to make your decisions. Just be careful of confirmation bias...



That may be true... but he didn't say he uses Lucas lol. You said you used Lucas, then quoted yourself saying you use Lucas. He never said what brand he uses that I saw... just said he uses an AB formula, which are usually made specifically to work together.

Hes not using a Grow, Micro, Bloom, hes using a Grow A, Grow B, for veg and Bloom A, Bloom B for flower unless hes misspoke about his nutes being A and B ferts. He can't cut Bloom A because it has 4%N... Will not resolve his current issue, and will add more on top of it. But hey, guess we all have to fuck up a few plants to learn!

I'm not arguing. I agree. I just put the Lucas thing out there because Lucas would be considered really high in N by the ops calculations. I don't know his line , the plants don't know his line, but it doesn't matter, the npk ratios are what matter.

 

[Tangerine_]

If you're using a 2 part, do not cut out part A completely. The label might say it only contains N, but it likely contains micronutrients the plants need...especially your Ca.
Guaranteed Analysis is a whole other topic but I just wanted to chime in and advise against cutting it completely.

I know if can get a lil tricky for new growers but you'll learn to tailor your nutes as you go.

What brand are you using? I've got run out and do some errands so I dont have time right now, but I'm sure someone can run the numbers for you.

 

[Tmurrayftw]

If you're using a 2 part, do not cut out part A completely. The label might say it only contains N, but it likely contains micronutrients the plants need...especially your Ca.
Guaranteed Analysis is a whole other topic but I just wanted to chime in and advise against cutting it completely.

I know if can get a lil tricky for new growers but you'll learn to tailor your nutes as you go.

What brand are you using? I've got run out and do some errands so I dont have time right now, but I'm sure someone can run the numbers for you.

I'm using humboldt secret and ill just cut back a little on it i won't rule it out completely and yeah it does get tricky lol