Optimal NPK ratios?

Fupaslayer

Fupaslayer

Well-Known Member
i was wondering what are some npk ratios y’all use with cal and mg ratios included also please!
I’ve been running emerald harvest full lineup without sturdy stock and haven’t been to pleased!
 
TintEastwood

TintEastwood

Well-Known Member
Some nute numbers to view and compare here.


https://www.rollitup.org/t/greenleaf-megacrop.956634/page-21


K/CA & K/Mg ratio...
Applying too much calcium and magnesium can cause a potassium deficiency; the K/Ca and K/Mg ratio should always be kept above 2 (but below 10, since too much K can hinder the absorption of calcium and magnesium). Too much potassium can also prevent the absorption of certain micro-elements, such as zinc. It is particularly important to take account of this interaction when using very hard water with a high calcium and magnesium content.

More Techno Beaver Ratio info.
http://www.cannagardening.com/interactions_between_nutrients
 
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Guccizillaa

Guccizillaa

Well-Known Member
TintEastwood said:
Some nute numbers to view and compare here.


https://www.rollitup.org/t/greenleaf-megacrop.956634/page-21


K/CA & K/Mg ratio...
Applying too much calcium and magnesium can cause a potassium deficiency; the K/Ca and K/Mg ratio should always be kept above 2 (but below 10, since too much K can hinder the absorption of calcium and magnesium). Too much potassium can also prevent the absorption of certain micro-elements, such as zinc. It is particularly important to take account of this interaction when using very hard water with a high calcium and magnesium content.

More Techno Beaver Ratio info.
http://www.cannagardening.com/interactions_between_nutrients
Click to expand...
Random bits of useful info like that are why I love this site
 
ANC

ANC

Well-Known Member
It will depend on the plants. I can run a single hydro tray with multiple strains and they will clearly show different nutrient demands.

FOr flowering, you want the PK levels to peak about week 4, anything after this is unnatural to an extent of almost being a genetic modification.
 
Fupaslayer

Fupaslayer

Well-Known Member
ANC said:
It will depend on the plants. I can run a single hydro tray with multiple strains and they will clearly show different nutrient demands.

FOr flowering, you want the PK levels to peak about week 4, anything after this is unnatural to an extent of almost being a genetic modification.
Click to expand...
I’m trying to learn more stuff in detail about nutrients ; I’m using the two part emerald harvest line up and when the bottle says it’s 3-0-3 for part A bloom how can I calculate if I’m getting 3-0-3 when using 1ml per gallon(example) or 5 ml per gallon? Does my question make since? Because what I’m assuming (again example) is if i were to use 1 ml per gallon giving me 3-0-3 does that mean 5 ml per gallon would be 15-0-15?
That being said I’m also assuming the max dosage of ml’s per gallon of each nutrient bottle that the companies feeding chart suggest is what gives you the npk on the bottle?
 
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Merlin1147

Merlin1147

Well-Known Member
Fupaslayer said:
I’m trying to learn more stuff in detail about nutrients ; I’m using the two part emerald harvest line up and when the bottle says it’s 3-0-3 for part A bloom how can I calculate if I’m getting 3-0-3 when using 1ml per gallon(example) or 5 ml per gallon? Does my question make since? Because what I’m assuming (again example) is if i were to use 1 ml per gallon giving me 3-0-3 does that mean 5 ml per gallon would be 15-0-15?
That being said I’m also assuming the max dosage of ml’s per gallon of each nutrient bottle that the companies feeding chart suggest is what gives you the npk on the bottle?
Click to expand...
Ok fertilizer 101. When it says for example 3-0-3 on the label that means it is 3% Nitrogen, 0% Phosphorus and 3% Potassium by volume. Most times growers work in ppm parts per million. So a straight bottle of 3-0-3 is 30,000 ppm N, and 30,000 ppm K. If you mix 5 ml of this to a gallon you calculate the ppm as 30,000 times the number of ml (5) divided by the number of ml in a gallon (3785). So (30,000 * 5)/3785= about 40 ppm of Nitrogen.
Hope that helps.
Ratios of NPK. In veg I use 3-1-2. Then shift to 1-1-2 after the stretch.
 
Fupaslayer

Fupaslayer

Well-Known Member
Merlin1147 said:
Ok fertilizer 101. When it says for example 3-0-3 on the label that means it is 3% Nitrogen, 0% Phosphorus and 3% Potassium by volume. Most times growers work in ppm parts per million. So a straight bottle of 3-0-3 is 30,000 ppm N, and 30,000 ppm K. If you mix 5 ml of this to a gallon you calculate the ppm as 30,000 times the number of ml (5) divided by the number of ml in a gallon (3785). So (30,000 * 5)/3785= about 40 ppm of Nitrogen.
Hope that helps.
Ratios of NPK. In veg I use 3-1-2. Then shift to 1-1-2 after the stretch.
Click to expand...
Thanks I had a feeling I was gonna be completely off sounding like a dummy
 
Flowki

Flowki

Well-Known Member
ANC said:
It will depend on the plants. I can run a single hydro tray with multiple strains and they will clearly show different nutrient demands.

FOr flowering, you want the PK levels to peak about week 4, anything after this is unnatural to an extent of almost being a genetic modification.
Click to expand...
Not sure I understand what you are saying. That p and k should reach max level at week 4 then taper down?.
 
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Fupaslayer

Fupaslayer

Well-Known Member
Flowki said:
Not sure I understand what you are saying. That p and k should reach max level at week 4 then taper down?.
Click to expand...
Ya that’s what he’s saying.. my feeding chart follows that pattern to though it peaks at week 5 and starts pulling back on p/k in week 6
 
Flowki

Flowki

Well-Known Member
Fupaslayer said:
Ya that’s what he’s saying.. my feeding chart follows that pattern to though it peaks at week 5 and starts pulling back on p/k in week 6
Click to expand...
I see, it's strange since what I've read is that K becomes more useful toward the end, say weeks 5 to 7 before taper down of a 9 week strain. Maybe the context of flower time matters?, or else I have been mislead.

You are including the stretch time within that 4 week time frame or it's from flower onset?.
 
Fupaslayer

Fupaslayer

Well-Known Member
Flowki said:
I see, it's strange since what I've read is that K becomes more useful toward the end, say weeks 5 to 7 before taper down of a 9 week strain. Maybe the context of flower time matters?, or else I have been mislead.

You are including the stretch time within that 4 week time frame or it's from flower onset?.
Click to expand...
No your not misled k is useful in the end for tricome and I believe resin I may be mistaken though but going by my chart it is pulled back some not a lot when starting week 6 feeding. See my chart shows to use 12ml of my bloom booster during weeks 4/5 which contains mainly p/k then drops back down in week 6 and if it were a long flowering cycle I would keep my bloombooster up for another week or two
I’m in week 5 right now and have tweeked my ratios of each bottle nutrient to drop some of my N and raise my p/k
 

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Flowki

Flowki

Well-Known Member
Fupaslayer said:
No your not misled k is useful in the end for tricome and I believe resin I may be mistaken though but going by my chart it is pulled back some not a lot when starting week 6 feeding. See my chart shows to use 12ml of my bloom booster during weeks 4/5 which contains mainly p/k then drops back down in week 6 and if it were a long flowering cycle I would keep my bloombooster up for another week or two
I’m in week 5 right now and have tweeked my ratios of each bottle nutrient to drop some of my N and raise my p/k
Click to expand...
Ah I see, thought I had got some things very wrong there ;p. What do you like to have N at toward the mid/end of flower, you do try to keep leaves green til end right?.
 
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