For transition (first 2 weeks of flip), I thought Hell was using 2g Part A, 2g Epsom Salt, 2g Part B, 1.25g MPK. and possibly 1g fulvic
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So @Hellraiser and @Myfriendis410 you are only using 2 g of each? My best buds came out with using
A 4.1
B 2.8
E 1.6
A lot higher than your numbers. I am wondering if the 2-2-2 is some thing to consider since I would use less nutes. But these last 3 plants I did using the 15% more were much better than any others I had done using Jacks.
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yes, that was just for the transition period. (first 2 weeks of flip) both before and after that it was regular jacks.
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I ran 3-2-1 up until flower start then did the modified 2-2-2-1.2 of MKP. That was for the first 3 weeks of flower then resumed 3-2-1.
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I will have to call for more info. With my GH, as you know. That is the point where you step things up, not cut back I saw your buds and your plant. So it looks like it did work. Just seems odd. I like growing. It can be like trying to learn a new language some times 
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Love how jacks us going from simple to all confusing AF… Lol
Jack’s base 3/2/1 is 3.6/2.4/1.2
I boosted it to 4/2.4/1.2 in flower, before I had mkp, and waited for deficiencys on the nitrogen (light green /yellow leafs), calcium (rust spots), or magnesium (whitening).
No deficiencies shown in the first round for me thankfully. If I did I would boost it to what @Not2SureYet was running on the cal nitrate or the mag or both.
The joys of a nutrient like this is we can adjust it to our needs.
I think a heavier feed helps build buds though so try everything @Not2SureYet and go with whatever works for you.
Feeding Jack’s heavy is cheaper than feeding GH or anything else light lol.
Ps some extra details for those that read this without our experience may be helpful down the road
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LOL, I hear you. I think I went back and forth with Hell about 15 times before I felt confident I had at least written it down accurately. Just when I thought I had it he would casually toss in Humic or Fulvic into the mix and I was like ok… then WAIT?? WTF where does THAT go? (erase white board, start over). Then of course I picked up some silica and started to use that, only to go back and re-read the thread, oh duh, that was for coco not for soil… dang, another confusing bottle on the shelf.
Funny though, when went back from the beginning and read THE ONE TRHREAD it all at one time, it made more sense, lol. (yes, i am distracted much)
So, both you and @Myfriendis410 I believe are spot on. Regular Jack’s base Jack’s base 3/2/1 is 3.6/2.4/1.2. That what a lot of folks are using for the entire grow, but I believe there are some that switch to the modified 2g Part A, 2g Epsom Salt, 2g Part B, 1.25g MPK for the transition period from veg to flower, then back.
I think there is still a bit of tweaking if needed esp if you are in soil to compensate for whatever is in the pot or whatever your individual plant is telling you like you mentioned (deficiencys on the nitrogen (light green /yellow leafs), calcium (rust spots), or magnesium (whitening))
Yes, this is a rehash cause I am just going to cut and paste it into my log. lol
Since I purchased a little RO rig, I now make my batches 5 gal at a time. The really cool part about this is that when you take the 3.6, 2.4, and 1.2 times 5 they are now 18g Part A, 12g Part B and 6g ES. (hehehehee, no decimals… BOOM, mic drop). right back to really easy.
Hell uses a bit of tap water to adjust his pH (dang, I really like that too. Haven’t gotten there yet), but I now find that 1/8 tsp of pH up (in my 5 gal bucket) puts me right in the target range. Now the only tedious part for me is putting the finished product into 1 gal jugs to store til needed. Currently I only need to make two 5 gal batches a week, so can’t complain.
The “extra conversation” about things like FishSh!t, Recharge, Fulvic (or is it Humic) and Silica are still all fuzzy for me. And I agree, some extra details (all in one place) would be nice
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Do it in a homebrew bucket with a spigot. It’ll make 1 gallon transfers simple.
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I bought an aquarium wavemaker and once mixed, the device is dropped in to the bucket until needed. No having to transfer to other containers. That’s all I use are buckets and a dipper.
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I like that, but right now my travel schedule is CRAZY again (starting to miss covid already). So my lovely assistant is handling watering duty for me. so, its really just a lot easier for her to use the moisture meter (she doesnt like the “here lift and see if it feels light” method even though I keep an unplanted grow bag of dry soil for here to compare to).
“Stick the meter in, if its dry give it a whole jug” works for her (as long as I write it down. lol)
See I have it sorted for 5 gallons & for 25 gallons because I fill my two 25gallon auto pot reservoirs (first mixing it all into 5 gallons as one big bucket of concentrate) then pouring it into the 20 gallons of dechlorinated tap water (I have a carbon filter on my cold kitchen sink tap line that costs me 100$ a year.
I add fishshit at the end.
Haven’t added fulvic or humic but one doesn’t really matter in hydro.
Pulled from his YouTube page
The booster is as follows.
2/2.7/2/1.2
Jacks
Cal nitrate
Epson salts
Mkp
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Ps does Mkp just get mixed in at the end? Or what’s the order to avoid drop out.
@Hellraiser
@BobbyDigital
@Myfriendis410
@Covertgrower
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It’s the last thing to add. Mixes in about as well as Part B.
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I’m still playing around with the Jacks mix in flowering. On my current grow I plan on not using MKP and just upping part A to 4g/gal and see how that goes and maybe dropping part B to 2g/gal after a few weeks of flowering as the nitrogen and calcium requirements should come down at mid flowering and beyond but will watch them like a hawk and make adjustments as needed.
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Here one bag is like 26 buck and tge other is like 34 or so i think b is more than a
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@Hellraiser Thanks, I did notice for one plant I was on the borderline of to much N in early flower. A couple weeks and she just worked thought it. I did see I may need to figure out how much I want to remove for the next group. 
Once I hit week 5 of flower is when I moved to the 15% more and did great that way. This new group will show if it was just luck or if it does help me. I am adding 1ml of 325ppm Banana water for flower. The last 4 plants done that way came out really good.
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I did the 4grams per gallon and it grew buds, but it was also my first Jack’s run.
I’m dealing with a flooding autopot right now lol
But I’m glad we can continue to share info.
I hope to do a clone test if my clones are successful that is… I should have watched more clone videos before I did it but meh
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Yeah I have that old chart to.
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