Speed of green
Active member
when you say 1:1 are you talking about weight or EC?
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A question for the growers using Jacks 5-12-26
- Thread starter Jabapc
- Start date
when you say 1:1 are you talking about weight or EC?
Trich_Tyson
Active member
Sorry.
I measure by EC.. I use stock solutions and add till I hit whatever level I'm trying to hit.
Don't quote me on it, but I think the results will be the same when using EC or weight as measure.. volume definitely not...
But idk.. i really just rely on EC.
Trich_Tyson
Active member
Right on.. I'm not in coco anymore...
I also taper off the strength (with maxi in the past)
Trich_Tyson
Active member
Taken from a few pages back. Mckush and ichabod have posted it a few times too
600 ppm is 360 ppm jacks and 240 ppm calcinit 240/360=.67
750 ppm is 450 ppm jacks and 300 ppm calcinit 300/450=.67
900 ppm is 540 ppm jacks and 360 ppm calcinit 540/360=.6
Mix by ec and ur golden. Start with ur to water. Or ro. If it's tap @ .4. Thats zero. So add jacks to get to 560. Mix. Then add cal not till you hit 800 (-200 from tap is 600 of bite solution). And feed. That make sense?
600 ppm is 360 ppm jacks and 240 ppm calcinit 240/360=.67
750 ppm is 450 ppm jacks and 300 ppm calcinit 300/450=.67
900 ppm is 540 ppm jacks and 360 ppm calcinit 540/360=.6
Mix by ec and ur golden. Start with ur to water. Or ro. If it's tap @ .4. Thats zero. So add jacks to get to 560. Mix. Then add cal not till you hit 800 (-200 from tap is 600 of bite solution). And feed. That make sense?
Thanks for the quick reply. I believe I understand getting to the right total ppms as mentioned above but how does 240/360=.67? And so forth. So I'm starting with ro. Jacks up to .72 and then calnit to 1.2 total ec. Will I need epsom salt in coco also? Thanks for taking the time to explain, sometimes it's the simplest things....
Trich_Tyson
Active member
just check out the next post.. maybe? this was harder to explain than i thought haha.. maybe made it worse
Last edited:
Trich_Tyson
Active member
If i am understanding correctly you are trying to figure out how much of each to use to reach your predetermined, desired strength.
A ratio is "parts" of a "whole" - where the whole is the total strength.
Lets use whole numbers because ratio's involving decimal places are hard to visualize.. since it's already a fraction. (1/(2/3))
so the lowest equivalent whole number ratio is 3:2 (3x1=3, 3x.66667=2)
3 parts jacks to 2 parts calnit... a part can be anything can be 1 gram.. 1 tablespoon.. .1 EC.. (we won't use volume because it isn't accurate)
so regardless of what the value of your part is.. there are 5 total parts. 3 of 'em are jacks and 2 of 'em are calnit.. You just gotta figure out what the value of 1 "part" is..
so we use our final value (the whole) to determine the value of a part..
in EC or ppm:
lets use 500ppm since its easy.. we wanna feed a total of 500ppm.. consisting of 5 parts.
500/5 = 100.. each part of the whole (think pie chart, with equal pieces) is 100 ppm..
we know our ratio is 3 parts to 2 parts.. so 3 parts jacks = 3x100 = 300
and 2 parts calnit = 2x100 = 200
300+200 = 500.
in grams:
we want to feed 5 grams... with 5 parts making up the 5 grams... 5/5 = 1... 1 gram = 1 part...
so we want 3 parts jacks (3x1g = 3g) and 2 parts calnit (2x1g = 2g)
PPM and EC measurement is your best bet..
another example:
if you've ever mixed soil using recipes here..
they sometimes use parts
i.e. 5 parts peat, 3 parts aeration, 2 parts compost..
this is a ratio.. it's 5:3:2.. it doesn't matter what your part is (a bucket, a dump truck, a handful) the ratio will remain the same because you are using the same value (bucket, truck etc.) as your part.
I don't think this makes sense in writing.. i'll never be a math teacher lol..
and you really don't need the math since the ratios i posted will cover most needs.. unless you want to go lower in strength
A ratio is "parts" of a "whole" - where the whole is the total strength.
Lets use whole numbers because ratio's involving decimal places are hard to visualize.. since it's already a fraction. (1/(2/3))
so the lowest equivalent whole number ratio is 3:2 (3x1=3, 3x.66667=2)
3 parts jacks to 2 parts calnit... a part can be anything can be 1 gram.. 1 tablespoon.. .1 EC.. (we won't use volume because it isn't accurate)
so regardless of what the value of your part is.. there are 5 total parts. 3 of 'em are jacks and 2 of 'em are calnit.. You just gotta figure out what the value of 1 "part" is..
so we use our final value (the whole) to determine the value of a part..
in EC or ppm:
lets use 500ppm since its easy.. we wanna feed a total of 500ppm.. consisting of 5 parts.
500/5 = 100.. each part of the whole (think pie chart, with equal pieces) is 100 ppm..
we know our ratio is 3 parts to 2 parts.. so 3 parts jacks = 3x100 = 300
and 2 parts calnit = 2x100 = 200
300+200 = 500.
in grams:
we want to feed 5 grams... with 5 parts making up the 5 grams... 5/5 = 1... 1 gram = 1 part...
so we want 3 parts jacks (3x1g = 3g) and 2 parts calnit (2x1g = 2g)
PPM and EC measurement is your best bet..
another example:
if you've ever mixed soil using recipes here..
they sometimes use parts
i.e. 5 parts peat, 3 parts aeration, 2 parts compost..
this is a ratio.. it's 5:3:2.. it doesn't matter what your part is (a bucket, a dump truck, a handful) the ratio will remain the same because you are using the same value (bucket, truck etc.) as your part.
I don't think this makes sense in writing.. i'll never be a math teacher lol..
and you really don't need the math since the ratios i posted will cover most needs.. unless you want to go lower in strength
In my experience with Jacks Hydroponic/Calnit ....
if you want a 1:.67 ratio of Jacks to CalNit, measured by ppm in solution------>the Calnit value by weight will be 80% of the Jacks by weight----->so 100grams of Jacks to 80 grams of Canit will get you that 1:.67 by ppm ratio.
All that being said, I found it a pain to hit my desired ppm of each when mixing one, then the other into a volume of water....only to over/undershoot on one or the other causing me to recalculate or start over...maybe its just me,
What really works for me is making a one part stock.....
I mix 100 grams of Jacks to 86 grams of Calnit ( a 1:.73 ratio by ppm, which worksbbetter for me) into 5 gallons of water.
Now I have a known and consitent ratio in a one part stock which gets added to any volume of water until I hit my desired feed strength.....somewhere between 600 and 800 ppm (not including my tap water base of 150 ppm).
There were some painstaking measurements taken to derive and confirm these values in my setup. If your salts are damp, you will have to check your ppm values and adjust accordingly.
There are a bunch of ways to skin a cat, this one just happens to work for me....maybe it will work for you too.
Hope that helps. Jacks is a great fert at a great price. Who wants to worry about the cost of there nutrients when mixing a batch. ...not me
if you want a 1:.67 ratio of Jacks to CalNit, measured by ppm in solution------>the Calnit value by weight will be 80% of the Jacks by weight----->so 100grams of Jacks to 80 grams of Canit will get you that 1:.67 by ppm ratio.
All that being said, I found it a pain to hit my desired ppm of each when mixing one, then the other into a volume of water....only to over/undershoot on one or the other causing me to recalculate or start over...maybe its just me,
What really works for me is making a one part stock.....
I mix 100 grams of Jacks to 86 grams of Calnit ( a 1:.73 ratio by ppm, which worksbbetter for me) into 5 gallons of water.
Now I have a known and consitent ratio in a one part stock which gets added to any volume of water until I hit my desired feed strength.....somewhere between 600 and 800 ppm (not including my tap water base of 150 ppm).
There were some painstaking measurements taken to derive and confirm these values in my setup. If your salts are damp, you will have to check your ppm values and adjust accordingly.
There are a bunch of ways to skin a cat, this one just happens to work for me....maybe it will work for you too.
Hope that helps. Jacks is a great fert at a great price. Who wants to worry about the cost of there nutrients when mixing a batch. ...not me
Miraculous Meds
Well-known member
The 1 represents jacks ratio when compared to cal nit at .67. Its the rounded up way of saying 3 parts jacks to 2 parts cal nit(which is actually .6 repeating) . Another way to say it is whatever volume of jacks u add, multiply by .67 and that's how much cal nit u add.
The 1 : .67 ratio is what JR Peters recommends and is a good place to start.
I grow in coco or Rockwool and find im a bit light on N and Ca at .67, so i am trying things at .73 (or 86% by weight). It is providing quicker, greener growth and less hollow stem.
Give it whirl and see whats working for you.
I grow in coco or Rockwool and find im a bit light on N and Ca at .67, so i am trying things at .73 (or 86% by weight). It is providing quicker, greener growth and less hollow stem.
Give it whirl and see whats working for you.
I'm also in coco dtw. Are you needing to add calmag/epsom salt? Do you have to routinely flush your coco? Thanks again
Trich_Tyson
Active member
1:.67 is the most common formula round here. And you can probably get better feedback around here if you stick to what's known.
Personally. I am using it at 1:1 during veg. Will drop calnit as stretch comes to a close
Personally. I am using it at 1:1 during veg. Will drop calnit as stretch comes to a close
I only use calmag to buffer a freshly hydrated brick of coir before first use.
Lately I have been doing multiple feeds, 3 or 4 , with a little run off each time. As long as your not over feeding or letting the pots dry out I'm not sure that it is necessary to flush. They will get about a week of straight wzter at the end.
Peripheral
Member
Is jacks a brand or formula?
MPL
Member
Just to add my experience with Jack's...
F&D tables, RO/DI water, 1k DE lamps, 1000ppm C02, air temp ~78F, leaf temp ~81F, VPD ~0.90kPa or so.
Entire cycle*: I mix 600uS Jack's, 1.0g per gallon MKP, and 600uS CalNit. I end up around 1375uS. I find with 1000w DE, warm temps and C02 that the plants need a lot more NPK than is provided in the standard 1:0.67 ratio. This is just what works best for me in my set up. If I don't add the MKP and run CalNit 1:1 with Jack's I get N and P deficiencies out the wazoo.
*I lower total salt concentration to ~1100uS during veg
F&D tables, RO/DI water, 1k DE lamps, 1000ppm C02, air temp ~78F, leaf temp ~81F, VPD ~0.90kPa or so.
Entire cycle*: I mix 600uS Jack's, 1.0g per gallon MKP, and 600uS CalNit. I end up around 1375uS. I find with 1000w DE, warm temps and C02 that the plants need a lot more NPK than is provided in the standard 1:0.67 ratio. This is just what works best for me in my set up. If I don't add the MKP and run CalNit 1:1 with Jack's I get N and P deficiencies out the wazoo.
*I lower total salt concentration to ~1100uS during veg
MPL
Member
