Using jacks 321 and a few amendments, i heard you dont need to use the epsom salt for success, what,? How do i know if i need to use it or not ?
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@AfgVet does Jack’s without Epsom: maybe she’ll drop in.
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Jack’s Part A has magnesium in it. Sulfur is a secondary nutrient, also found in Part A. Both amounts are sufficient enough that slightly increasing Part A sort of replaces the Epsom, without overdoing it with other available nutrients. Some keep it traditional with the recipe, some go with 4/2 (A/B) no epsom. I’ve done both. This last run was Jack’s at 4/2 (even up to 7/2 at times in flower with 1,300ppms!) and I just harvested some of the hardest, frostiest buds I’ve grown in 3 years…
Edit/add… I grow in plain, straight coco. No perlite or anything. I don’t know how this recipe works for soil, but I know a few growers on here have ran the 4/2 in coco with great results.
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When you say 4/2, that’s 4 Grams part A for a gallon of water and 2 grams part B for the same gallon, is that right?
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Wow those are dense!
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I’m interested in this too as I currently run Jacks with Epsom and add silica.
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4/2 has slightly less calcium, magnesium and sulphur while adding slightly more pk. Imo standard is better. I get tweaking the nitrogen for flower with the 0-12-26 but not reducing the rest.
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I run 421 in flower, if I don’t add Epsom, I get yellow between the veins, no deficiency with it. I’m in Promix/perlite and my lights burn magnesium like crazy. I can understand not using it in soil but inert mediums usually need it . Coco that is well buffered may be different, I’m thinking of trying coco or a mix next. I don’t care to feed every day or more, so thinking of 50/50 with Promix… nice buds by the way!
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I get super purple stems. Then the last couple weeks I usually end up with a near lockout because I rarely feed to runoff. Ya, it’s a coco nono, but it’s doing the trick. Plus I blast tf outta them with a 350r in a 3x3.5
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Correct. To piggy back on what @Poseidon1 said, if I get problems during veg or middle of flower, I will throw a gram of epsom in the mix for a few feedings. But generally I only use silica, Jack’s A and CalNit.
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When I ran the standard mixture, using epsom, I would have a mag deficiency on nearly every plant, in both coco and hydro. Running the 4/2 has rectified that while simplifying the process.
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Those are some nice pretty solid buds.
@Borderryan22
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BAM !! Those are the size of hand grenades! Nice job growmie!
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321 has more magnessium then 4-2. Strange how you get deficiency when using more?
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Here is the breakdown of elemental ppm for jacks at 4/2, and traditional. As you can see its less calcium, sulphur, magnesium, and nitrogen in the 4/2 mix as i stated above. This is green gene’s hydro buddy breakdown to give credit where its do. The first two categories.
Personally do not see advantage of using 4/2 other then one less part to use. No thanks.
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Personally I don’t see the advantage in the 3,2,1. The results I get with the 4/2 are superior to the 321 with less added. It’s a win win for me
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@AfgVet So no comment to why you have deficiency using more magnesium as in 321 over 4/2? Just its easier? I posted the breakdown above. That is the advantage.
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I’m with @Borderryan22 and @AfgVet on the 4/2 and every now and then I’ll just do an extra pinch of Epsom. Like Ryan, I don’t religiously water to runoff. I’ve recently adopted a runoff Sunday routine that’s been working great.
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If it doesn’t work for me, it is not an advantage to me. Pretty simple. 4/2 works better for me and it’s easier so that’s a win win
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@AfgVet Thats fine. It works for you. But getting a magnesium deficiency everytime with 321 vs 4-2 simply does not make sense. Just wanted to be sure there was something i was missing or not. Ive tried jacks every way possible. Its all the same to me. But personally prefer 321 for the extra calcium and magnesium. We all have a way.
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