I’ve been considering the Mega Crop 2 part as well! I’ve used the one part, and had some decent results. I’ve grown almost exclusively with Gen Hydro 3 part for years now. So part B is just Calcium Nitrate would you use Epsom Salt as well like you do Jacks?
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Here’s a link to a Greenleaf Nutrients MegaCrop 2 Part grow show I did. I got around 47 ounces under a 600W HPS, that was then turned up to 1000W HPS about halfway through 12/12. The total cost I spent on nutes was under $7.
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From experience (coco
Canna, lacks magnesium and it’s expensive for coco.
Masterblend, not too impressed by it.
Mega crop too much nitrogen in flower.
Advanced nutrients only ran once with autos. It was ok.
Currently running jacks 321 except for calcium nitrate I use floracal. Way less nitrogen and the sam amount of calcium. Jacks 321 is good for veg. Super cheap and my plants love it.
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Dyna-Gro, its cheap, easy to mix and its a complete nutrient line, nothing else needed…not even some cal/mag additive. And its bloody good.
ProTeKt seedling to harvest
Foliage Pro in veg.
Bloom in flower
MagPro in flower
They have a cannabis relavent feed chart and cultivation guide on their web site
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I just use 6mL/gallon Dyna Gro 7-9-5 with 1g of Potassium nitrate per gallon of water seedling-to-finish now. Works great. No silica no additives.
(and a water sterilizer and a little pH down but that’s it)
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My skin looks like a dolphin’s. Poreless, and cheeks so firm you could bounce a quarter off them (upper and lower cheeks nawmsayin)
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Plant prod MJ 3 bags lasts for ever and a jug of micro .
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When I started I was swayed into the A N line , when I got low after several runs I switched to Jacks…I’ll never look back !
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I like the flavor Mills gives all my plants. Sort of a coffee skunky overtone seems to be similar in all the strains I grow. Coffee poop.
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I’m deep in The Foop, It seems to be indoor the same as out door, excellent.
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MegaCrop 5-12-26 & Part 2.
Or
Gaia green 444 all purpose (2 tbsp per 1gal)
Gaia green 284 Flowering (2 tbsp per 1gal)
Worm Castings (2 tbsp per 1gal)
Or
Wow Wallace Starter Packs
Or
Organic Nutrients
All work perfectly 
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In the course of almost 30 years cultivating I’ve used a bunch of nutrient companies…as far as price point and quality materials goes I’d put JR Peters/Jacks at the top of my list!!
It’s a very complete nutrient line and doesn’t require a bunch of “boosters” or “additives”…in fact I’d put it up against any nutrient line on the market today!
Mixed to a 1:.67 ratio it’s very close to 3:1:4:2:1 with a cal/mag ratio of 2:1. I mix my nutrients via ppms not by weight or volume…it’s technically a 3 part…
A (5-12-26) used to be called Pro Hydroponic
B (Epsom Salt) Magnesium Sulfate
C (15-0-0) Calcium Nitrate
Mixed in that order…
JR Peters/Jacks is so good in fact that there are multiple companies now that have copied their recipe…anything close to the “5-11-26/5-12-26” is a knock off…
Pictures below were grown with JR Peters/Jacks 3/2/1
Brian(Alaskagrown)
P.S. It’s also worth mentioning JR Peters/Jacks is very user friendly in that it will work with any medium or grow style…the pictures below are from Aeroponics, coco in Root Pouch bags, and ebb n flo setups…it will work with anyway you want to grow…it’s made for R.O./Distilled water but I’ve used my well water perfectly fine! 
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Rip off cannabis junk and make work regarding the mixing which is designed to sell you incomplete foods so you have to buy more. Oh, the gimmicks…
There’s only one (complete) food you need - Dyna-Gro Foliage Pro or their Grow. https://dyna-gro.com/product/liquid-grow/
Been using this food (and many other NON cannabis specific foods) for decades.
Tio
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I buy Peters High Performance 25-5-10 by the 50# bag. Another excellent food is Osmocote Indoor-Outdoor Plus. Used it exclusively on a recent C99 grow.
This is a steal, lowest price I’ve seen it. https://www.amazon.com/Osmocote-Outdoor-Smart-Release-8-Pound-Fertilizer/dp/B00GTDGMHC/ref=sr_1_1?crid=20NU6H0TBPV5S&keywords=osmocote+plus+outdoor+and+indoor+smart-release+plant+food&qid=1639576219&sprefix=osmocote%2Caps%2C240&sr=8-1
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GH Maxibloom is complete as well…especially growing in coco Maxibloom will grow some stellar weed! Dry nutrient so not paying for water.
1 tsp a gallon from clone through flower…doesn’t get much easier as far as a 1 part nutrient program imo…
Brian(Alaskagrown)
EDIT: That Osmocote is definitely a steal @ $11 for #8 of dry nutrient…It’s a good fertilizer but feeds for up to 6 months(flushing could be a issue) and is released dependent on root zone/soil temperature.
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notill baby!
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Can confirm 100%.
1tsp MaxiBloom per gallon from seed to finish is all you really need. You can play with it, a couple additives, but that’s 95% of the heavy lifting right there.
I’d still use it if it had less calcium, but it’s a lot if you already have really hard water. I’d love for them to make a hardwater formula with like 1% Ca instead of 5%.
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I wouldn’t touch it. It’s not complete and the NPK is out of whack inducing late stage leaf drop. GH Maxibloom 2.2 lb Pouch - Brew & Grow Hydroponic and Homebrewing Supplies of Chicagoland
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I’ve been using it to grow not only pot but tropicals, grapevines, maters, trees in the field, et…you name it. I know plant nutrition and soil chemistry. “Flushing” is not an issue, much less being one of those ridiculous cannabis paradigms that just won’t die. My C99 smoke tastes like Fruit Loops cereal and is as smooth as silk. It’s also very lung filling.
Applied once and you’re good for the season. All my tropical fruit trees get nothing more than Osmocote. They bloom and fruit well with no issues.
And yes, it’s a steal. Just because your vendors rip you off doesn’t mean their goods are worth a crap.
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