been using jacks for 4 years now. i have tweaked it and re tweaked it over and over with additives like 0-52-34(
MOAB)
big bud, JRP-bud booster pot silicate, zone, ive used it for soil, coco, dwc, clones, power cloner..... i have almost tried every option anyone has ever stated here on the forum. My conclusion is this: use jacks and jacks only. DO NOT ADD ANY ADDITIVES. EVERRRRR!!!! LOL i dont measure by grams or tsp nore do i have a cart. I have a very trusty blue lab and ive build my own ec/ppm/ph meters using the Raspberri Pi. total cost to build one of these is like 80 bux if get all the hardware from the web. they are bullet proof and never skip a beat. anyway back to jacks: see below
To achive
desired ppm do the following.
300ppm: add 180 ppm of 5-12-26 then ads 120 ppm of 15-0-0
600 ppm: add 360 ppm of 5-12-26 then add 240 ppm of 15-0-0
750 ppm: add 450ppm of 5-12-26 then add 300 ppm of 15-0-0
900 ppm: add 540 ppm of 5-12-26 then add 360 ppm of 15-0-0
i will not take credit for above because i didnt come up wit it. someone on here posted it awhile back... cant rememeber who. I wanna say it was DS.
this fucking works you guys. i have 40 harvest with those numbers and final product is out of this world. taste, smell, nose, frost, weight, density.... all of it. your not gonna pull 3lbs per 1000w.... but i have out of those 40 harvests im at 1.75-2.5 lbs per 1000w period. what ppm's should you be at during the diff stages of the grow..... yours plants will tell ya. look at the plants and feel the enviro, you will know within time.
sorry for my typos guys, i type fast and usually dont have much time to go back and correct.
HS
---forgot to mention, i use pure ro. industrial grade diy system that puts out 0 ppm. i strip that shit clean....