I'm growing after a long break and the simplicity was a main factor which drew me to this. I don't plan on getting geeked out on anything any time soon lol.
I didn't factor micros in. I know i can't use GH micros due to nitrogen. Will I need some sort of micros additive, or will the 3-2-1 suffice without deficiencies, lockout, hurt yield?
Obviously we all want everything to be optimal but Ive not grown in a while and along with the jack's I'm trying some other new things, so don't want to over compliment things that won't heavily the grow negatively.
Also on the table you posted is the 3.6 /2.4 /1.1 the ideal ratio?
I'm not trying to be offensive, but your statement is fairly conflicted. I know this because I was at the same crossroads some months back. If you want simple or cheap, that limits the possible outcome, so desires like ideal and preferred are lessened. In the chart, is both 3.6-2.4-1.1 & 3-2-1, as well as GH bloom for reference. IMO, GH at 100% is way too hot, GH @70% is still too hot, but lacking in P, Jack's 3.6..... is way too hot, and Jack's 321 is lacking in micros, P and Mg is way too hot.
All of those concerns can be remedied and made "ideal", that's actually ideal, but it will take more investment as well as the need to learn the math, or how to use Hydro Buddy to calculate your doses. I've already made a tutorial on 420mag forums and it's linked above, it will teach you how to use Hydro Buddy, and with that knowledge, you'll be able to make much more informed decisions. FWIW, I had decent luck supplementing my long regimen with GH Flora Micro as I had almost a gallon left over, but would never have been able to do that if I didn't know how to use Hydro Buddy.
As it is now, I no longer use Jack's Peter's or any other Part A mix. I build my entire regimen from the ground up and in about a week will be fully complete in my research and will have a finalized BOM and feed chart. Here's a list of the products I now use, ie Macros and Micros. In about a week, I will replace Micros with Chelated Micros, but still need to purchase the chelated metals.
--Macros
Potassium Silicate
Potassium Sulfate
Calcium Nitrate (cal nit)
Magnesium Nitrate
Magnesium Sulfate (Epsom)
Monopotassium Phosphate (MKP)
--Micros
Iron Sulfate
Manganese Sulfate
Zinc Sulfate
Copper Sulfate
Boric Acid
Sodium Molybdate
---------------------------------------------------------
--Chelated Micros
Iron DTPA
Manganese EDTA
Zinc EDTA
Copper EDTA
Boric Acid
Sodium Molybdate
Right now, I use the Macros and Micros, but refined research has me wanting to use the Chelated Micros and I'll do so in about a week. I have the Boric Acid and Molybdate, but now need to replace the chelated metals. FWIW, I've been using STEM which is JR Peter's micro mix, but it's made of sulfate micros, and when mixed into a concentrate to be used weekly, all of the iron at least fell out of the solution and gave my Pineapple Chunk some damage as a result. This is why I will get chelated micros, then I can dial in the exact numbers I wish to target. If I see any toxicity or deficiency, I can tweak the feed to address every concern w/o fear of changing other things and causing cascading problems. My goal is to give my plants exactly what they need, when they need it and not more. I aim to have perfect leaves and stems at the end of bloom and I am literally inches away from that goal.
So as I said, if you seek simplicity, you'll need to lower your expectations or redefine what "ideal" means to you. For me, it means a whole lot.
https://www.420magazine.com/community/threads/making-your-own-nutrient-concentrates.455187/
