Totally agree..... most of whats in water is calcium and magnesium....and your plants are getting plenty of that.....
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A question for the growers using Jacks 5-12-26
- Thread starter Jabapc
- Start date
Totally agree..... most of whats in water is calcium and magnesium....and your plants are getting plenty of that.....
Trich_Tyson
Active member
Finishing my current run on maxi diet.. gunna start my veggers on this jacks.. for the sake of $ and ease.
now.. couple questions.. some of which have been discussed.
Do you guys mix your stock solution in the gallon jug of water? Obviously with all that powder in there.. there isn't room for the full gallon of water. I know I can test it to get a reading.. but I am using a truncheon so it's not super precise.
Second. When I dropped the jacks powder into the water.. the powder that sank got pretty damn hot and stayed hot till dissolved.
Third.. I ended up with the black scum you guys had run into.. We figure out whats up with it?
Fourth.. It smells funny.. like burnt plastic kinda.. normal? I can't tell if it's a reaction with the plastic or just how the chems smell when concentrated.
now.. couple questions.. some of which have been discussed.
Do you guys mix your stock solution in the gallon jug of water? Obviously with all that powder in there.. there isn't room for the full gallon of water. I know I can test it to get a reading.. but I am using a truncheon so it's not super precise.
Second. When I dropped the jacks powder into the water.. the powder that sank got pretty damn hot and stayed hot till dissolved.
Third.. I ended up with the black scum you guys had run into.. We figure out whats up with it?
Fourth.. It smells funny.. like burnt plastic kinda.. normal? I can't tell if it's a reaction with the plastic or just how the chems smell when concentrated.
I mix mine for a 44 gallon trash can....
I dont use the stock solution.... INstead I use a measuring cup..... and put each into a half gallon of water or so.....
shake it up till mixed....then dump into the trash can.....
I then test the ec with the truncheon to get to 1.2 ec....
If you still want to use the stock solution.....find a 2 gallon water container to mix.....
that gives you some shake space....
I dont use the stock solution.... INstead I use a measuring cup..... and put each into a half gallon of water or so.....
shake it up till mixed....then dump into the trash can.....
I then test the ec with the truncheon to get to 1.2 ec....
If you still want to use the stock solution.....find a 2 gallon water container to mix.....
that gives you some shake space....
Trich_Tyson
Active member
Lol. Nice.. Yea. the stuff dissolves pretty easily. I was surprised how easily the 880g dissolved into the gallon. Just a few short rounds of shaking over an hour or so.
Trich_Tyson
Active member
Heres another one..
I'm sure you guys are familiar with the V+B hype.. and I would say for the most part, the hype is real. It's an easy one part, that works.
So, I plugged it's values into a calculator to see what it looked like, and to see if i could reach the rates/ratios with cheaper ferts.
5 grams V+B vs. 1:1 jacks (2g:2g) + 4ml/gal protekt (to boost k - also what i use to adjust ph)
I'm going to stick with the 1:.66 for now - but thoughts?
this is for fruits and veg.. but it's still cornell
http://www.greenhouse.cornell.edu/crops/factsheets/hydroponic-recipes.pdf
I'm sure you guys are familiar with the V+B hype.. and I would say for the most part, the hype is real. It's an easy one part, that works.
So, I plugged it's values into a calculator to see what it looked like, and to see if i could reach the rates/ratios with cheaper ferts.
5 grams V+B vs. 1:1 jacks (2g:2g) + 4ml/gal protekt (to boost k - also what i use to adjust ph)
I'm going to stick with the 1:.66 for now - but thoughts?
this is for fruits and veg.. but it's still cornell
http://www.greenhouse.cornell.edu/crops/factsheets/hydroponic-recipes.pdf
Last edited:
Miraculous Meds
Well-known member
My thoughts r that u might be able to slightly improve on the basic formula, n ratios of elements. But r u hitting 1.5gpw on good yielding strains. R u growing in a laboratory environment where the precision of ur control is 2% plus or minus. R u growing almost perfectly healthy,low stressed plants. If ur not doing all that, then I doubt u would be able to see any difference in trying to tweak this General formula. There's already way too much evidence of top quality growers absolutely killing it with a basic nutrient regiment all the way thru plant life. Heath, dhf, ichabod, h3ad, the countless people in this thread. I could mention a lot more very successful growers that follow this same nutrient guideline. Proof is already out there. I follow the lead of the successful that come before me, and add my own experiences to the mix to make it work best in my situation.Heres another one..
I'm sure you guys are familiar with the V+B hype.. and I would say for the most part, the hype is real. It's an easy one part, that works.
So, I plugged it's values into a calculator to see what it looked like, and to see if i could reach the rates/ratios with cheaper ferts.
5 grams V+B vs. 1:1 jacks (2g:2g) + 4ml/gal protekt (to boost k - also what i use to adjust ph)
I'm going to stick with the 1:.66 for now - but thoughts?
View Image
this is for fruits and veg.. but it's still cornell
http://www.greenhouse.cornell.edu/crops/factsheets/hydroponic-recipes.pdf
Something I picked up from heath or h3ad, was in mid flower if u wanted to add some pk boost, was to lower base from 1.2ec, to1ec, then add .2ec of ur choice of pk.
Trich_Tyson
Active member
1.5gpw - me? lol.. perfect plants? me?..
fuck no dude lol.
I know that almost all other factors will more greatly impact your results (enviro, training, stress etc.) than nutrients.
I know this formula is time tested and approved throughout the canna industry. The proof is clearly in the pudding
My room was built entirely around info I learned from DHF, IC, and others.
Just something i'm curious about
V+B results + nutrient ratios + cornell - nobody fucks with cornell when it comes to AG - made me wonder.
and regardless.. I've got to dial in the time tested formula anyway.
fuck no dude lol.
I know that almost all other factors will more greatly impact your results (enviro, training, stress etc.) than nutrients.
I know this formula is time tested and approved throughout the canna industry. The proof is clearly in the pudding
My room was built entirely around info I learned from DHF, IC, and others.
Just something i'm curious about
V+B results + nutrient ratios + cornell - nobody fucks with cornell when it comes to AG - made me wonder.
and regardless.. I've got to dial in the time tested formula anyway.
howdy trich! did you notice one of the authors of the cornell paper is cari peters, the granddaughter of the original jrpeters. not all that important, i just thought it was interesting.
i'm still using the 5-12-26 and calcinit at equal volumes. by weight it comes out to 1/.66. my plants are growing fast with no displays.
this is my first round under de lighting and i have been increasing ec for more nitrogen. these plants have been seeing around 750 ppm at the .5 conversion. a little bit too light for these lights. i'm running ec 2 or 1000 ppm now.
Interesting....i have always gone by IC's recommendation for a quart of stock solution. 145gs of CalNit and 220gs of Jacks Hydro per quart.
Original post from Ichabod_Crane "I mix 880 grams per gallon of the Jack's and 580 grams per gallon of the calcium nitrate. I don't use magnesium sulphate. With these stock solutions I use 10 ml per gallon of easch to get about 600-650 PPM."
So TC, you bump it up to 1100 and 880?
Yup, I don't know what water source he is using but I use ro water and those numbers are what I found to give me 360&240 at 10ml's per gallon.
I use RO water as well. But I use that under a magnetic ballast 1000k HPS bulb. If you are running more intense light or CO2 you may need to bump up the feed EC numbers.
With my LED light which is about the same light intensity as a DE I feed 14ml of each of the above mix plus 1.5 tsp per 5 gallons of magnesium sulphate (epson salts). Otherwise the plants are not eating enough.
This is with out CO2 added. If you are using CO2 you may need to up the amount some more. I dont run CO2 so I can not say for sure on this though.
This is a picture of my LED light with plants feed at 14 ml. I think this is running at a PPFD of just over 900.
Ganjaganjakush
Active member
.8-1ec in veg at 1:1 ratio, my 6k de maxes at 1.2-1.3 1:66 ratio for a week then by week 6 I drop calnit and use straight jacks at 1ec till week 8 then straight ro till chop.
Here is deathstar at 34 days on this schedule 3 gal coco fed evwry hour for 30 seconds lights on
Here is deathstar at 34 days on this schedule 3 gal coco fed evwry hour for 30 seconds lights on
I typically don't either but had a "cool" run and it was hooked up so I did and shit yeah they eat more
Speed of green
Active member
any jacks users ever have yellowing in flower?
It looks like a N deficiency, i am seeing it across all strains, some plants worse than others. In veg the plants looked great, green vigorous growth. when the plants started yellowing i had been feeding them the same thing during veg, 1.2ec 6.2-6.3ph Plants are in PROMIX, i have checked for pests and found none, roots are white and healthy, Runoff is @ .6ec and 5.8ph. I have recalibrate my meters and use two separate ph meters to test everything.
The yellowing started the second week of flower, some lower fan leaves, then the middle, and now i have some at the top. I fed them with a stronger solution a week ago 1.9ec 6.1ph because i thought the sun was so much more intense than 1000w lamps. I had some very minor leaf tip burn a few days after this feeding, so that has me thinking that maybe the strength of the feed was not the issue.
Maybe my mixing method needs to be changed. I'm using r/o water mixing equal volumes, i have a large 250gal rez that i feed from.
My r/o is directly hooked to the 250gal rez. i mix the 250gal rez to 1.2ec and 6.3ph, to mix the rez i take a 5gal bucket and fill it half way with tap water then i dissolve 10tbsp jacks, stir and wait 5 minutes, then 10tbsp cal nit. i take this concentrate and pour it in the 250 rez until it hits 1.2-1.4 ec. After i feed, i normally only use 100-120 gallons, the r/o automatically refills the rez, dropping the ec and changing the ph. the rez sits like this for a few days at a time in between waterings. there is an air stone as well.
The 5 gal bucket i mix in has probably a teaspoon of white powder in it after i mix the concentrate, the concentrate is completely transparent and yellow/light amber like beer.
Can anyone tell me if I'm doing anything wrong?
Photos are attached, Thanks for the help, trying to rule out some variables.
It looks like a N deficiency, i am seeing it across all strains, some plants worse than others. In veg the plants looked great, green vigorous growth. when the plants started yellowing i had been feeding them the same thing during veg, 1.2ec 6.2-6.3ph Plants are in PROMIX, i have checked for pests and found none, roots are white and healthy, Runoff is @ .6ec and 5.8ph. I have recalibrate my meters and use two separate ph meters to test everything.
The yellowing started the second week of flower, some lower fan leaves, then the middle, and now i have some at the top. I fed them with a stronger solution a week ago 1.9ec 6.1ph because i thought the sun was so much more intense than 1000w lamps. I had some very minor leaf tip burn a few days after this feeding, so that has me thinking that maybe the strength of the feed was not the issue.
Maybe my mixing method needs to be changed. I'm using r/o water mixing equal volumes, i have a large 250gal rez that i feed from.
My r/o is directly hooked to the 250gal rez. i mix the 250gal rez to 1.2ec and 6.3ph, to mix the rez i take a 5gal bucket and fill it half way with tap water then i dissolve 10tbsp jacks, stir and wait 5 minutes, then 10tbsp cal nit. i take this concentrate and pour it in the 250 rez until it hits 1.2-1.4 ec. After i feed, i normally only use 100-120 gallons, the r/o automatically refills the rez, dropping the ec and changing the ph. the rez sits like this for a few days at a time in between waterings. there is an air stone as well.
The 5 gal bucket i mix in has probably a teaspoon of white powder in it after i mix the concentrate, the concentrate is completely transparent and yellow/light amber like beer.
Can anyone tell me if I'm doing anything wrong?
Photos are attached, Thanks for the help, trying to rule out some variables.
Ganjaganjakush
Active member
Looks like overfeeding ans you locked something out or ratio is off and something locked up. Best way is to measure in ec wheb making water. I make stock solutions in veg .4EC of each. In flower .5-.6 jacks to .3-.4 cal nit I max out around 1
.2 and drop calnit about day 40, also see your using tap water jacks works best with ro.
.2 and drop calnit about day 40, also see your using tap water jacks works best with ro.
Speed of green
Active member
So you think i should cut the feed back to .5 jacks .3ec calcnit, in R/O. I'm at day 25 now.
Trich_Tyson
Active member
Righteous man.. plants look great
and glad to see you using 1:1 in veg. 1:.66 wasn't cutting it for me.. and based on numbers I decided to try 1:1.. they are loving that shit.
Now.. when you drop the cal nit entirely do you run into calcium or lockout issues?
Ganjaganjakush
Active member
No I will feed jacks at about .8 and slowly lower it and 10 days or so before chop just do straight ro. The way coco works is around thst time the Cal cation is built up and will lock out mag if too much calcium. Also doing this my flowers have swelled alot more then 1.2 till chop
