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120-60-300-120-60-177.2 Nutrient Tutorial, or, My Thread Can Beat Up Your Thread.

  • Thread starter Thread starter dankworth
  • Start date Start date Feb 13, 2012
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120-60-300-120-60-177.2 Nutrient Tutorial, or, My Thread Can Beat Up Your Thread.

dankworth Feb 13, 2012 602 Replies 107,355 Views
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dankworth

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#381
lex0415 said:
I'm running plants in soil with GH MaxiGro 10-5-14 and GH liquid Koolbloom 0-10-10. I figured out the ppms with cannastats (thanks to Cap) with 5 grams/G of Maxi and 2 ml/G Koolbloom to be 132-57-206 NPK with Ca-Mg at 79-26. I know Ca and Mg seem low but I"m gonna get CaliMagic soon.

The reason I'm posting this info is because I think this is a decent formula based on what I see alot of pros doing on here and that is as close as I can get to a 3-1-4 formula with only MaxiGro and Koolbloom. Basically I wanna know if this would work good in soil because I know most people that run the 3-1-4 ratio are in rockwool or coco. So is anyone running a similar nute ratio in soil??
Click to expand...
Botanicare 3-1-2(more a something-1-2.9 I think) is supposed to be for soil/coco.
They list exact ppms on their website somewhere I think.
No micros in that.
That info may even be in my 3-1-2 thread somewhere.
 
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LexLuthor

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#382
dankworth said:
Botanicare 3-1-2(more a something-1-2.9 I think) is supposed to be for soil/coco.
They list exact ppms on their website somewhere I think.
No micros in that.
That info may even be in my 3-1-2 thread somewhere.
Click to expand...


Thanks, I'll find out there exact numbers and punch it in the nute calc.

Does anyone know where Ca and Mg should be in relation to a 3-1-2 formula in soil with NO amendments?? I was thinking 2:1 N:Ca and 2:1 Ca:Mg.
 
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LexLuthor

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#383
Question Dank, what was that website you mentioned earlier on this thread that you said you learned alot about growing in coco?? I forgot the name.
 
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dankworth

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#384
lex0415 said:
Question Dank, what was that website you mentioned earlier on this thread that you said you learned alot about growing in coco?? I forgot the name.
Click to expand...
I think it was Integral Hydroponics, not 100% sure.
 
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LexLuthor

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#385
dankworth said:
I think it was Integral Hydroponics, not 100% sure.
Click to expand...


Thanks alot bro, that just jogged my memory, it was manicbotanix.....right??
 
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pork

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#386
when you're doing the MOAB/HH at the end, are you still keeping your total K at 300?
 
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dankworth

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#387
pork said:
when you're doing the MOAB/HH at the end, are you still keeping your total K at 300?
Click to expand...
Nope I boosted it higher I think.
No longer will do that. Will bump P and K to JK's recommendations or thereabouts. No more HH/MOAB at the end.
 
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outwest

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#388
dankworth said:
Nope I boosted it higher I think.
No longer will do that. Will bump P and K to JK's recommendations or thereabouts. No more HH/MOAB at the end.
Click to expand...

Check out what homebrew is doing for a bloom boost using raw salts. I believe it's MPK?

Hope you are well, DW!

outwest
 
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pork

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#389
P to 90 and K to?

i've been running my P at 90 and the girls seems to love it, might even want a tad bit more...

basically, although higher levels of Phosphates can contribute to slowed Fungi growth, the plant itself needs a fair amount of Phosphorus for full development. Fungi and the plant will compete for phosphate resources and 30ppm doesn't allow for the plant to get enough, imo, and after talking to a botanist friend of mine in a different field of study...
 
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dankworth

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#390
pork said:
P to 90 and K to?

i've been running my P at 90 and the girls seems to love it, might even want a tad bit more...

basically, although higher levels of Phosphates can contribute to slowed Fungi growth, the plant itself needs a fair amount of Phosphorus for full development. Fungi and the plant will compete for phosphate resources and 30ppm doesn't allow for the plant to get enough, imo, and after talking to a botanist friend of mine in a different field of study...
Click to expand...
Thinking should bump k from 300 regularly to 350 or so
 
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dizzlekush

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#391
dankworth said:
Thinking should bump k from 300 regularly to 350 or so
Click to expand...
whoa whoa whoa....

300-350ppm of K?
177ppm S?

Dude you gotta dump that potassium sulfate.

Big props for doing your own formulations. makes growing so much easier.

Cannabis can handle a huge amount of K and S without showing signs of phytotoxicity but that doesn't mean that you should overdo it so much. You're essentially throwing nutes down the drain, causing a salinity buildup in your medium, leading to osmotic stress and decreased transpiration, therefore decreasing Ca, B, and Si uptake (which is dependent on rate of transpiration). Aside from the increased salinity, excess K decreases Mg and B availability, and excess S decreases Ca availability.

I understand a bit of healthy skepticism. But to make you more of a believer id check out some of "Yosemite Sam"s grows here and at ICM. He grows monster cannabis trees with really nice yields and he does it with ~120ppm K and ~60ppm S, although he is running that in coco which provides a good amount of K. I personally use K up to 200-220ppm, but that is only during the heaviest periods of nutrient requirement and is only for a few fertigations.

Here's an example of one of my heavy feeds, i only ever increase P higher than this during the 2nd half of bloom, since there is some evidence that higher P levels increase THC content, but i never go above ~85ppm P. My Mg and S are only that high to get my N higher, usually i try to keep Mg around 45ppm and S around 60ppm

My waters got ~29ppm Ca and ~11ppm of each S and Mg so those are included in the results



Other than that, thats as hot as my feeds get. Usually when i dont feed so heavy my formulations fall close to Hoaglands, except i cut the N and Ca to 40-70% and use 10X the Zn, Cu and Mo since they are not as significant a contaminant in salts as they were when Hoagland & Arnon decided on their solution, and most Cu Zn and Mo requirements used to be provided as contaminants.

Hoagland's Solution:
N 210 ppm
P 31 ppm
K 235 ppm
Ca 200 ppm
Mg 48 ppm
S 64 ppm
Fe 1 to 5 ppm
Mn 0.5 ppm
Zn 0.05 ppm
Cu 0.02 ppm
B 0.5 ppm
Mo 0.01 ppm

BTW the Hoaglands solution was made for heavier feeders than cannabis like squash, melons, peppers and tomatoes, and it only uses a fraction of the K and S that you're using. Also if you want to lessen the internodal elongation (stretch) that happens during the first 3 weeks of bloom, try keeping your P in the 25-35ppm range during the stretch, as high P levels increase internodal elongation. Remember Hoaglands is only 30ppm and is for heavier feeders.

Hope that helps,
dizzle
 
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dizzlekush

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#392
I just realized that the formula i posted for my heavy feed is crazy close to Spurrs. This is by coincidence and usually my formulas are not so high EC and identical to his. I know his formulas have been brought up before on this thread, but since i feel like i accidentally stole spurrs formula and called it my own that i should plug his formulas.

Everythings from ICM so just replace the 'invalid's with the correct address

Spurrs Formula's:


In case you're wondering how we come up with this shit, what ppm to decide on etc., here's Spurrs explanation for his formulas and a list of the best cannabis tissue analyses r.e. nutrient levels. Basically you just try to provide similar ratios of nutrients that you find in tissue samples and then just keep in mind basic fertigation science (rates of nutrient uptake/acquisition, effect on pH, alkalinity, nutrient antagonism, precipitation, salinity etc.)

In my honest opinion Spurrs formulas use way too much Si and have a tad too much NH4, and if you keep calcium so heavy in the 2nd half of bloom you can see some delayed maturation in some strains, especially in the stigmas, but other than that his formulas are the most excellent i have ever seen.

Explanation:



Tissue Analyses:


P.S. dankworth love your avatar. Cant believe they were planning on killing off Pinkman at the end of the 1st season, the show wouldn't be as good without him.
 
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Capulator

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#393
lex0415 said:
Thanks, I'll find out there exact numbers and punch it in the nute calc.

Does anyone know where Ca and Mg should be in relation to a 3-1-2 formula in soil with NO amendments?? I was thinking 2:1 N:Ca and 2:1 Ca:Mg.
Click to expand...

1:1 N:Ca
2:1 Ca:Mg

I like to run around 150ppm Ca if possible.

Fatman states a 3-1-2 ratio is best in veg through end of stretch... followed by a 2-1-2 in flower. I may try this formula next round to see how it does.
 
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Capulator

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#394
dizzlekush said:
whoa whoa whoa....

300-350ppm of K?
177ppm S?

Dude you gotta dump that potassium sulfate.

Big props for doing your own formulations. makes growing so much easier.

Cannabis can handle a huge amount of K and S without showing signs of phytotoxicity but that doesn't mean that you should overdo it so much. You're essentially throwing nutes down the drain, causing a salinity buildup in your medium, leading to osmotic stress and decreased transpiration, therefore decreasing Ca, B, and Si uptake (which is dependent on rate of transpiration). Aside from the increased salinity, excess K decreases Mg and B availability, and excess S decreases Ca availability.

I understand a bit of healthy skepticism. But to make you more of a believer id check out some of "Yosemite Sam"s grows here and at ICM. He grows monster cannabis trees with really nice yields and he does it with ~120ppm K and ~60ppm S, although he is running that in coco which provides a good amount of K. I personally use K up to 200-220ppm, but that is only during the heaviest periods of nutrient requirement and is only for a few fertigations.

Here's an example of one of my heavy feeds, i only ever increase P higher than this during the 2nd half of bloom, since there is some evidence that higher P levels increase THC content, but i never go above ~85ppm P. My Mg and S are only that high to get my N higher, usually i try to keep Mg around 45ppm and S around 60ppm

My waters got ~29ppm Ca and ~11ppm of each S and Mg so those are included in the results

View attachment 275593

Other than that, thats as hot as my feeds get. Usually when i dont feed so heavy my formulations fall close to Hoaglands, except i cut the N and Ca to 40-70% and use 10X the Zn, Cu and Mo since they are not as significant a contaminant in salts as they were when Hoagland & Arnon decided on their solution, and most Cu Zn and Mo requirements used to be provided as contaminants.

Hoagland's Solution:
N 210 ppm
P 31 ppm
K 235 ppm
Ca 200 ppm
Mg 48 ppm
S 64 ppm
Fe 1 to 5 ppm
Mn 0.5 ppm
Zn 0.05 ppm
Cu 0.02 ppm
B 0.5 ppm
Mo 0.01 ppm

BTW the Hoaglands solution was made for heavier feeders than cannabis like squash, melons, peppers and tomatoes, and it only uses a fraction of the K and S that you're using. Also if you want to lessen the internodal elongation (stretch) that happens during the first 3 weeks of bloom, try keeping your P in the 25-35ppm range during the stretch, as high P levels increase internodal elongation. Remember Hoaglands is only 30ppm and is for heavier feeders.

Hope that helps,
dizzle
Click to expand...



Great info. Do you drop a little N in later in flower or keep it at that all the way through?
 
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dizzlekush

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#395
Capulator said:
Great info. Do you drop a little N in later in flower or keep it at that all the way through?
Click to expand...
I lower my CalciNit applications in late flower since it will give some strains what i call "The curse of eternally white stigmas", and the plant will never look fully mature. Im fairly positive this is due to the excess Ca instead of N though, since i've found lots of scientific lit on Ca delaying maturation/senescence and most scientific lit i find on N talks about N DEFICIENCY causing a delay in maturation, have found nothing on excess causing it.

This leads me to believe the common belief amongst cannabis cultivators that N is bad for flowering comes from over application of Calcium Nitrate delaying maturation, and the N being blamed instead of the Ca.This is just like how NH4 is often blamed for causing stretch when its an overapplication of mono or di ammonium phosphate and the extra P that causes stretch.
Capulator said:
1:1 N:Ca
2:1 Ca:Mg

I like to run around 150ppm Ca if possible.

Fatman states a 3-1-2 ratio is best in veg through end of stretch... followed by a 2-1-2 in flower. I may try this formula next round to see how it does.
Click to expand...

The N to Ca ratio is relatively unimportant aside from its effect on lodging and insect & mold susceptibility. A lack of either will increase susceptibility, but the higher the N and the lower the Ca the more susceptible the plant becomes. Excess N softens tissues, while Ca toughens it. The softer the tissue, the more susceptible the crop is to lodging, insects and molds. Other than that, Cannabis will grow very happily on a wide range of N:Ca ratio as long as adequate amounts of each are provided.

The Ca:Mg ratio is much more important, as each antagonizes the uptake of the other, 3:1 - 2:1 Ca:Mg being the optimal range.

150ppm Ca? Yosemite Sam was going that high in Ca trying to get the Albrecht ratio's in his medium (old-school discredited science), but last i heard from him it was causing some serious delays in his crops maturation, although the ladies looked very healthy. you noticing anything?

3-1-2 is great for veg, 2-1-2 isn't optimal for bloom but plants will do just fine on it. 2-1-2 is considered the 'go-to' ratio for most horticultural applications
 
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kuz

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#396
Not in coco, but fwiw. Heavy feeders peak bloom nutes;
133 149 550 101 135 222

mild nutes peak bloom:
118 80 352 50 100 115

The heavy feeders I've found gorge themselves on mg, cant get enough.

These strains that like lighter nutes are kind of new to me. This round I'm keeping n ca and mg the same all the way through flower. So far so good. From flip to 25 or 30 days:
118 40 184 50 100 63
118 60 279 50 100 94 day 30
118 80 353 50 100 115 day 40

5 gallon airpots with Rocks. Flood for 1 minute 5 times a day (about a gallon I think), for 15 - 20 days into flower, then I flood 9 times a day. Each plant has its own small 2 gallon res, I have to top with r/o or the salts build up, ec goes crazy. You guys in coco have this problem? First res change 15 days in, then every 10 days or so.

Thats the plan anyway, work in progress.
 
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LexLuthor

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#397
Capulator said:
1:1 N:Ca
2:1 Ca:Mg

I like to run around 150ppm Ca if possible.

Fatman states a 3-1-2 ratio is best in veg through end of stretch... followed by a 2-1-2 in flower. I may try this formula next round to see how it does.
Click to expand...


Thanks Cap, I'll definitely try 1:1 N:Ca to see how it works.
 
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kuz

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#398
Uh, wasnt real clear. I meant when running drain to waste in coco do you get salt build up and need to flush every so often?
 
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El Cerebro

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#399
1:1.2 N:Ca coco/chow
 
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LexLuthor

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#400
El Cerebro said:
1:1.2 N:Ca coco/chow
Click to expand...


So is it the same for something like 50/50 coco/perlite??
 
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Thread info

Replies 602
Views 107,355
Started Feb 13, 2012
Latest post Aug 24, 2016
Starter dankworth
Forum Nutrients and Fertilizers

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