Additives PPMs

K

KasparGrower

Well-Known Member
Hi guys! I would like to know how is it adaviced to manage additives' PPMs ) like PK bosster an so on in a , nutrient regimen.
I've seen around people suggesting going with 2/3 of total PPMs with base nutrients and 1/3 additives; and also people suggesting on increasing only base nutrients if we have for example to bump up the PPMs and leave the additives at the same concetration.
So what is the best way to go for you guys?
 
K

KasparGrower

Well-Known Member
And these added at 1/3 of total PPMs?
Right now I buffer my RO water with 250PPMs of CalMag. I subract these 250 PPMs to the total I want,let's say 1000. This puts me at 750; 750PPMs with 2/3 of them (500PPM) being base nutes and 1/3 (250PPM)additives .
So you are saying 500 PPM bas and 250 MPK/Potassium Sulphate?
 
fragileassassin

fragileassassin

Well-Known Member
I raise and lower my base nutrient (megacrop) to control N in flower and use MKP and magphos to keep things in lucas formula using renfros calculator.
its worked fairly well so far.
 
K

KasparGrower

Well-Known Member
fragileassassin said:
I raise and lower my base nutrient (megacrop) to control N in flower and use MKP and magphos to keep things in lucas formula using renfros calculator.
its worked fairly well so far.
Click to expand...
Awesome! Where can I find this calculator?
Also when using Lucas formula you still buffer RO water using CalMag right?
 
fragileassassin

fragileassassin

Well-Known Member

Understanding and Calculating Nutrient PPM

How’s your harvest going?? Knee deep in pounds. Epic
www.rollitup.org

I use tap and tested it and used the calc and add calimagic and epsom to get as close to 120 ca 60 mg as I could. have had success with it so far.

old but good link

CannaStats - Nutrient Profiles for Cannabis

This page provides a common language spoken by all fertilizer solutions and a way to mix them for growing cannabis hydroponically. Sometimes referred to as the Lucas formula, this page explains the true origin of this well known proven formula and the project that led to its discovery. Emphasis...
www.angelfire.com
 
lime73

lime73

Weed Modifier
fragileassassin said:

Understanding and Calculating Nutrient PPM

How’s your harvest going?? Knee deep in pounds. Epic
www.rollitup.org

I use tap and tested it and used the calc and add calimagic and epsom to get as close to 120 ca 60 mg as I could. have had success with it so far.

old but good link

CannaStats - Nutrient Profiles for Cannabis

This page provides a common language spoken by all fertilizer solutions and a way to mix them for growing cannabis hydroponically. Sometimes referred to as the Lucas formula, this page explains the true origin of this well known proven formula and the project that led to its discovery. Emphasis...
www.angelfire.com
Click to expand...
Awesome link...just calculated my nutes at 1ml/L, now i have a better beakdown of what is going into my plants and can adjust if needed. Will definitively help me moving forward...Thank's :bigjoint:
 
lime73

lime73

Weed Modifier
Yes i make sure to double check with my tds meter, my nutrient solution.

Its interesting seeing an actual breakdown of nutes into ppms rather a % of a #. Lol which my numbers seem to be pretty close so all good with me. :D
 
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K

KasparGrower

Well-Known Member
fragileassassin said:

Understanding and Calculating Nutrient PPM

How’s your harvest going?? Knee deep in pounds. Epic
www.rollitup.org

I use tap and tested it and used the calc and add calimagic and epsom to get as close to 120 ca 60 mg as I could. have had success with it so far.

old but good link

CannaStats - Nutrient Profiles for Cannabis

This page provides a common language spoken by all fertilizer solutions and a way to mix them for growing cannabis hydroponically. Sometimes referred to as the Lucas formula, this page explains the true origin of this well known proven formula and the project that led to its discovery. Emphasis...
www.angelfire.com
Click to expand...
Great post right here. Thanks!
Doing the maths based on the recomended chart,using my A+B Mills line,I see that I can hit the desired NPK actual PPMs using just one bloom additive and PK booster. If I put into the eqation the base nutes,K PPM spike a little too much. Is it ok running in flower just these two additives?
One other question: One of the additives ha a NPK of 1-4-3 but on the actual lable N is stated to be @ 0,5%. Is that the actual total N or they are considering 0,5 Nitrates and the other half Ammonium?
 
K

KasparGrower

Well-Known Member
fragileassassin said:
I raise and lower my base nutrient (megacrop) to control N in flower and use MKP and magphos to keep things in lucas formula using renfros calculator.
its worked fairly well so far.
Click to expand...
I used Megacrop to calculate its PPMs and it looks like using 0.5g/L gives you a pretty much perfect balance in NPK if we take in consideratione those charts that you linked before. Only thing that I see is that it goes too high with K in flower.
What do you think about it? Are those 100~ PPMs of K in excess a trouble or not? And why do you use MKP if there's still plenty P and K? Thanks again for sharing your knowledge!
 
fragileassassin

fragileassassin

Well-Known Member
through flower i mostly use 3 grams per gallon of MC + 1g per gal of MKP because of the N. This gets me to like 85/85/195 as a base. I add more or less of any of the 3 MC, MKP, and MagPhos depending on how the plants look. Usually its adjusting to pull N because theyre getting super dark.
Some plants like 100 N some hate it.
I dont follow those charts or anything, its just good overall info in the article.
 
K

KasparGrower

Well-Known Member
So you add Epsom salts just if you have to lower MC (that lowers total Mag PPM) and not if N is under control with 3g/gal MC ? Or do you add Epsom salts anyway? What PPM range for Mag do you suggest to keep on a general guideline? I generally add 2ml/L of CalMag to my RO for buffering purposes and it gets me a EC 0.5 (250PPM on 500 scale) and Mg PPMs of 22. This added to a hypotetical dosage of 3g/gal of MC,should lead me to 44PPM of Mg.
 
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fragileassassin

fragileassassin

Well-Known Member
No i have to run the 1g of epsom under my white LEDs in the flower tent no matter what. (white led messes with how they absorb mag or some shit idr the exact science but you gotta use more with white leds)
The newer MC formulas are supposed to have a lot more cal and mag than the original but its still not nearly enough for my setup.
I do my 50ppm tap water + 3ml/gal calimagic + 1g/gal epsom as a base all the way through flower. I usually dont need either in my veg tent under the T5s they just get straight MC then.
General rule is you want 2x the cal as mag. I use 120/60 and have had good results, some do 100/50 ect.
 
K

KasparGrower

Well-Known Member
fragileassassin said:
No i have to run the 1g of epsom under my white LEDs in the flower tent no matter what. (white led messes with how they absorb mag or some shit idr the exact science but you gotta use more with white leds)
The newer MC formulas are supposed to have a lot more cal and mag than the original but its still not nearly enough for my setup.
I do my 50ppm tap water + 3ml/gal calimagic + 1g/gal epsom as a base all the way through flower. I usually dont need either in my veg tent under the T5s they just get straight MC then.
General rule is you want 2x the cal as mag. I use 120/60 and have had good results, some do 100/50 ect.
Click to expand...
Nice! Thanks! How much % of Magnesium do you like to have from Epsoms and how much from CalMag?
Anyway following the white LEDs topic for a while,the community has come to the conclusion that all the Mag def realated to LEDs comes from the lack of IR in LEDs. This force us to keep a higher room temp to keep LST at 25-30 º C aswell as RH. Having VPD right seemes to eliminate all these def problems.
 
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