twentyeight.threefive
Well-Known Member
I was just kidding.
Jack's Classic /JR PETERS (Don't waste money on anything else)
- Thread starter SheepsBlood
- Start date
yinyang814
Well-Known Member
I'm about to finish up my bag of MegaCrop Part A, still have lots of CalNit, so I went ahead and bought my first bag of Jacks 5-12-26 to try out. Since they are so similar, is there a reason that Greenleaf recommends changing A/B ratios from veg to bloom while JRPeters recommends the same ratio all the way thru? I'm still fairly wet behind the ears so I'm very curious as to what everybody's experiences have been with keeping CalNit the same in bloom. I see a lot of feeding schedules online reference lowering the Nitrogen during late bloom. (I use coco/perlite or Promix HP with LEDs indoors)
ttystikk
Well-Known Member
General recommendations from the manufacturer are a starting point. Feel free to alter your recipes as you see fit.
You're right that cannabis does not need much nitrogen or calcium late in bloom, so feel free to reduce the calcium nitrate in your feed. Similarly, the time to add phosphorus is around week 3 of bloom, not near the end. What the plants need most at the end of bloom is potassium, along with sufficient magnesium and sulphur.
Rurumo
Well-Known Member
I usually use equal parts a/b during early-mid veg, then shift over to 321 ratio. Nitrogen drives growth even during the flowering phase, I wouldn't necessarily lower the calnit, but I do lower the overall EC a bit in late flower. They just no longer need such a high feed at that point. This is a great old thread about N and P during flower that addresses some misconceptions that are still commonplace years later: https://www.rollitup.org/t/the-never-ending-abuse-of-phosphorous-bloom-foods-to-enhance-flowering.158144/
Kassiopeija
Well-Known Member
Has anyone used this 5-parter
www.jacksnutrients.com
on coco/perlite using moderate/hard tapwater? Asking for a friend (serious)
Question is what else would necessary? (except the obvious pH- & epsom)
I read somewhere else there is a Jacks tap formula somewhere that is basically the same as the Lucas formula?
Shop Now | jrpeters12345
www.jacksnutrients.com
on coco/perlite using moderate/hard tapwater? Asking for a friend (serious)
Question is what else would necessary? (except the obvious pH- & epsom)
I read somewhere else there is a Jacks tap formula somewhere that is basically the same as the Lucas formula?
It's really not though because you use the bloom additive 10.30.20 in place of your A&B for the week or two that you're using it. You still use 1g of Epsom Salts per gallon per usual on those weeks, just no part A or B .
The same applies to the finishing 7.15.30 for the week or two that you're using it , you use it in place of the A and B.
You're also using each of those for such a short period of time that they really don't cost that much in addition to the other stuff. Can you say the same for folks growing with Advanced nutrients or any of the other big bottled nutrient brands?
Many people who grow with Jacks don't even bother with the additional additives and claim it doesn't really make any difference . I'm undecided on that one and I'm using them because because they had such a small cost to the overall budget I'm certainly not going to stress it.
Some folks are even listing products that you're not going to use like they're part of the regular schedule, unless you have high ppms in your water source, which is what the other formulas are for.
A couple people even list Epsom Salts is if that's a new additional thing, which really makes me wonder if they struggle on their grows . Nothing new about Epsom salts.
I switched about 3 months ago from using bottled nutrients like Advanced and I'm paying about 1/3 of what I was spending on nutrients buying the 25 lb bags of Jack's.
I also noticed a lot less pH drift with Jacks as opposed to Advanced.
waterproof808
Well-Known Member
shit, i slept on buying another 25lb bag of 5-12-26 before the price skyrockets and now I cant find anyone that will ship to hawaii.
Do you use epsom with Jacks 321 in RO? Ratio? I'm on week 3 from sprout.
Tolerance Break
Well-Known Member
Yes. Epsom is the 1. Without Epsom, they will hit a point where growth will stall out and then they will turn yellow. Once you add Epsom, the recovery is remarkably quick.
Just dilute to whatever ratio you're running. Say you're running 3 and 2 at .25 strength, do the same with Epsom. So, 1.5g part A, 1g part B, .5g epsom.
My blunder, I meant to ask @Rurumo about the ratios when using equal parts A and B in early-mid veg. In coco BTW.
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