Here is a paper I wrote on using General Hydroponics 3-part. It has been modified by moderators over the past few years. I plan to go through it and revise this method to fit my current understanding of using this nutrient blend.
Here is a link to the original thread @ Cannabisdot
Latewood's Legacy: GH 3-part and CalMag tutorial and discussion
Edit and rebuild of thread is forthcoming.
After experimenting for 2 years with Advanced Nutrients/additives...
Botanicare Pure blend Pro/additives...and GH3-part/additives.
I fond this formula works and yields the best; And leaves the roots healthy throughout grow. Goodluck
This should answer a lot of question's you newb's have, and It should save you some money in the longrun.
Since a lot of you get caught up in the Lucas Method. I found this to
yield more. However if you have space limitations, just remove the Grow
from the formula for smaller plants/yield
START>>>Here is a higher yielding alternative to cut and dried lucas method...
Use grow part in veg 1-1-1 and create high yield bushes=less plants=less trouble, same yield overall.
In flower...use squewed 3-part
.25-1-2 for 1st 4 weeks
weeks 4/5 revert to lucas 0-1-2. Cutting the nitrogen back.
High yield philosphy...Grow bigger, but less...
From 35 gallon rez I dip a 5g bucket and add nutes. I have a turkey
baster syringe that sucks up exactly 40 ml if you fill it, So that works
5 gallon formula...convert as necessary...
Starting with reverse-osmosis water
8ml per gallon
Veg 1-1-1 = 40-40-40
Flower .25-1-2 = 10-40-80
Finish 0-1-2 = 0-40-80
add calmag+/3-5ml per gallon **ph5.8 water for topoff's in between
nute change... I do not use calmag in nute change solution.
am doing what you are doing except I don't use carboload, I use Liquid
Karma/or Seablast/ or some type of Vit-b and sparingly (this stuff cause
all kinds of foliage. (Especially under-foliage and I find the too much
under growth can causes airflow, and pest problems)
LK/Vit-b as I do Calmag+ for topoffs's in between nute change. Alternate
topoff solutions each cycle; switching out LiquidKarma for Calmag+
every other week in between your weekly nute change (every 7-10 days).
Example: 3-part, topoff CM+, nute change 3-part, topoff LK, nute change 3-part, topoff CM+...etc, etc.
hope this makes sense.
Start off with all 3 parts
same value=8ml x's 5 G's=40ml=1 part
Campared to lucas 0-1-2/0-40-80 for flower...
Use .25-1-2/15-40-80 per 5 gallons. You get more mass using the nitrogen at this stage.
It is safe to say this is close to the Advanced Nutrients values, but I simplifiied the recipe by going to GH/lucas values
Actually, they are General Hydroponincs values...right off the bottle. tweak as you need.
In week *4/5 flower. I switch to 0-40-80, and continue alternating
CM+/LK topoff process. I topoff at least every other day. this is PK
boost time for 8 week finish, I just use clean 0-40-80 until PK
transition. so for 9-12 week finish you would hold off on PK/Overdrive,
Use Overdrive, or high pk formula for a week or 2 prior to final flush.
*week 4/5 of flower. drop ph to 5.4 to make PK nutes more available
to plants. increase the ph each week .1... i.e. wk4-ph5.4, wk5 ph5.5,
wk6 ph5.6, wk7 ph5.7, wk 8 5.8 finish...Again; If you require longer
finishing time, You hold off on this ph transition.
**most of the time, calmag+/LK will buffer the water's ph and you don't have to adjust.
So that is my take...I don't even right it down anymore. I just go
with the flow. Sorry about rambling on, but I figured I could go ahead and copy/paste this explanation to my notepad for publication on my hydroponics website.