Modified Jacks 321 schedule

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jonnynobody

Well-Known Member
Freshly mixed 32 gallons by PPM. 360PPM jacks and 240PPM calcium nitrate. 1g/gallon epsom salt added. +54 PPM for a total of 654PPM. PH adjusted to 5.8. I've got high hopes. After a few res mixes I'll know exactly how many ML/gallon of stock solution I'll need to reach the 360/600 marks. Light speed ahead:


440g jack's to 64oz RO water. 290g calcium nitrate to 64oz RO water. After straining 2x through a 4 layer micro mesh filter:

Jack's to 360PPM

+240PPM calcium nitrate for a total of 600PPM

+1g/gallon or 54PPM epsom salt for a total of 654PPM

PH adjusted to 5.8
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J

jonnynobody

Well-Known Member
cobshopgrow said:
its a matter of the fertilizer, i asure you mine disolve a 100% in 18c cold water, np, even a stock solution should work.
but i have no jacks, there will be differences for sure., my maxibloom really sucked in this regard.
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I'll try almost anything once. I only prepared half the amount of stock solution I wanted to so when I do the next batch I'll just take the RO water right out of the res and give it a shot. I'll report back tomorrow how it goes. Maxi bloom is a nightmare to mix isn't it? That's why I have a blender at my work station. Fuck smoothies. Great for mixing dry hydroponic fertilizers though :)
 
cobshopgrow

cobshopgrow

Well-Known Member
maxi bloom is a nightmare for sure!
am astonished everytime how well things can mix now i am using another salt.
i mixed maxibloom in warm water also, but i read its a bad thing do to so, and there is a sense behind.

maxibloom have some calcium carbonate which can be the cause of the issue, forming gipsum easily.
have never used jacks myself.
but i do know if a pro ferilizer say its water soluable to a 100% and made for drip irrigation, you cant be so wrong.
there will be quite some options in the usa beside jack, stuff farmers use in greenhouses for a few adollar a kilo.
 
J

jonnynobody

Well-Known Member
cobshopgrow said:
maxi bloom is a nightmare for sure!
am astonished everytime how well things can mix now i am using another salt.
i mixed maxibloom in warm water also, but i read its a bad thing do to so, and there is a sense behind.

maxibloom have some calcium carbonate which can be the cause of the issue, forming gipsum easily.
have never used jacks myself.
but i do know if a pro ferilizer say its water soluable to a 100% and made for drip irrigation, you cant be so wrong.
there will be quite some options in the usa beside jack, stuff farmers use in greenhouses for a few adollar a kilo.
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Maybe that's been part of my problem. I've had precipitation issues holding maxi in a reservoir. The scalding hot water I used to mix it probably bonded calcium sulfate. I'm looking forward to trying the mixing without hot water. I wonder if I'll get the same black stuff I got this time with scalding hot water. If I don't then we'll know the hot water is what did it. I'll report back tomorrow what happens.
 
cobshopgrow

cobshopgrow

Well-Known Member
if i would know jacks better, only can say my 5-20-30 is put in to water temparature to your choice, steer a bit and be done.
same fo my calcium nitrate.
i never used stock solutions, always mix only what i need and feed it.
my ph is mostly always stable after a day, good range with ro water plus maybe 10% tap.
never had any form of precipitation , could show a pic maybe.
 
J

jonnynobody

Well-Known Member
cobshopgrow said:
if i would know jacks better, only can say my 5-20-30 is put in to water temparature to your choice, steer a bit and be done.
same fo my calcium nitrate.
i never used stock solutions, always mix only what i need and feed it.
my ph is mostly always stable after a day, good range with ro water plus maybe 10% tap.
never had any form of precipitation , could show a pic maybe.
Click to expand...
What mix is that 5-20-30 you're using?
 
cobshopgrow

cobshopgrow

Well-Known Member
hakaphos base 5 5-20-30
yara calcinit
dont think the hakaphos is widely avaiable in the usa, could be wrong, its from the same company who does the glyphosat.
i guess there are quite some comparable base salts i simply dont know.
 
Vonkins

Vonkins

Well-Known Member
I'm running jacks in veg at 50% strength 1.8, 1.2, .6
Would like to keep it here cause plants are happy. My question is can I incorporate k2so4 and mkp once I'm flowering. If so, what would be the proper ratios @ what specific week in flower. Or just up my recipe by 5% until I get yellow tips. Only for flower though
 
cobshopgrow

cobshopgrow

Well-Known Member
youre right, i was thinking of caclium sulfate and wirting carbonate.
calcium sulfate is as we all know gipsum and thats whats the clumps are, this maxigrow n bloom is really highly hygroscopic and i think the "gipsum" is the cause.
 
2klude

2klude

Well-Known Member
jonnynobody said:
Running jack's for about 3 weeks now. I started at full strength 3.6g jack's, 2.4g calcium nitrate, and 1.1g epsom per gallon using RO water. PH adjust to 5.8. 1.8 EC. I've so far seen calcium deficiencies, magnesium deficiencies, and tip burn. I adjusted the mix after seeing significant Ca deficiencies on several plants. Rusty spots and rusty leaf margins on a few of my largest fan leave closest to the light. I omitted the magnesium sulfate. I reduced the jack's to 3g. I left the calcium nitrate at 2.4. The PPM (didn't do EC for some reason) was about 700. I added some seaweed extract that brought it to 724PPM. The plants all look healthy and the Ca deficiency seems to have disappeared. The quirks are a bit frustrating though. I don't like seeing tip burn on my plants at all and I do not ever like to see deficiencies. I'm going to Increase the calcium nitrate to 3g/gallon on the next mix with 3.6g jacks. If all is right with the world I'll keep running it. If it doesn't clear up completely then I'll have to experiment another time and get the garden back on maxi. Aside from being unable to keep a holding reservoir I never had a single issue with deficiencies running maxi. Never. I'm hoping the next mix takes care of business. I really want to love jack's, but it has to at least perform as well as maxi to be a viable replacement for me. I'll snap some pics. Maybe the issues aren't as bad as I think. I hate change.
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I had the same experience as you when I first started running Jack's. Deficiencies would appear in late veg but would work itself out by week 3 of flower. Last few runs I've been running Jack's @3g, Calnit @2.5g, no epsom, from rooted clone to last week of flower before flush. I also add 0.5g MKP @ week 2.5. My plants have never looked better.
 
HGCC

HGCC

Well-Known Member
waterproof808 said:
Do any of you lower the calnit in late flower?
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Yeah, I play with that ratio, normally I start pulling back mid flower to try and limit the amount of N.

I run jack at 3.5 grams, calnit around 2.2 no Epsom unless I see deficiencies. I use a bit of mkp starting mid flower when starting to decrease the calnit. I have been looking adding fulvic acid to the mix. This is under 1ks.
 
Vonkins

Vonkins

Well-Known Member
Vonkins said:
I'm running jacks in veg at 50% strength 1.8, 1.2, .6
Would like to keep it here cause plants are happy. My question is can I incorporate k2so4 and mkp once I'm flowering. If so, what would be the proper ratios @ what specific week in flower. Or just up my recipe by 5% until I get yellow tips. Only for flower though
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Anybody out there
 
A

Audiofilet

Member
Hot Diggity Sog said:
I never question anything you say but I have had the opposite experience. Maybe it depends a lot on what we all choose to feed with. But in my experience, more than 1.5 EC in coco starts to cause problems and more than 0.9 EC in RDWC is the same. Just my experience.
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It may well be that those who use fertilizers that are high in phosphorus and potassium need to run such high EC to get an adequate nitrogen level and if using low EC get an nitrogen deficiency since many "nutrient lines" have unsuitable ratios.
 
PJ Diaz

PJ Diaz

Well-Known Member
2klude said:
I'm running HPS DE lighting, pure coco, small pots, multifeeding.
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Cool. It looks like @HGCC is also running HPS. I guess it's still debatable about LED possibly needing more (Cal?) Mag compared to HPS, but if so that does make sense as to why HPS growers could omit the Epsom with less issues than LED growers.
 
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