the beauty of this approach. So let's say in the recharge, it would be real hard to put too much kelp, guanos, and cal/mag in there as long as the microbe management was working properly? Cultivation of the soil seems just as important as any other step and what makes this all so fun to read about!
Its about balance.
Carbs
roteins ( Browns:Greens) and unbalanced cal:mg can really cause problems.
Too much protein will burn all the carbs and not enough proteins will stop cellular function.
Here is my dummied down view of it:
Think of a cell as a machine that can build anything. RNA is the instructions of what to build and DNA is the entire list of things it could possibly build.
It has a conveyor belt running thru it with a big hopper on top and a keyboard to type in what you want.
The energy to run the cell comes from carbs.
The parts in the hopper that things are made from are amino acids (proteins aka greens)
The electrical system to run the keyboard and carry the signal throuout the cell is calcium.
You type in eyelash and you get an eyelash coming out on the conveyor belt, type in chlorophyl and you get chlorophyl.
Calcium is an electrolyte. Its the soils base charge carrier and magnesium is the backup. The cal:mag ratio must be correct to keep mag in line.
Too much available mag will lock your proteins ( greens... nitrogen) and too much calcium overall will fry the keyboard.
A slow and steady increase will power more and more cells correctly as the plant grows. Global calcium in the mix is mined by microbes and fungii as more is needed.
CalMag is a jumpstart to get things going but a sign that failure of the global system has occurred. ( The batteries are missing so you must get home on jumpstarts)
The reason why mag locks nitro is a natural defence mechanism that is in humans too. If calcium is low your cells aren't working properly so mag locks up nitro and growth stops.
Too much electricity fries the keyboard and the cell is useless (dead)
I made pure calcium water at 200ppm and dumped it into a pot that had gone crusty on top from too high mag.
It loosened the soil really well( killed mags electrical cling to nitro) but also messed the plant up really bad. Huge nute burn more like a hydro nute burn than the usual organic brown tips.
Get the carbs and proteins correct, balance the cal:mag, and then add minerals and let it cook.
If you google colloidal clays which are like serving platters, organic chelators at the base level of the soil structure, you will see how Momma Nature fills the dinner plates and the true importance of calcium is quickly revealed.
It fills most of the platter so nutrients can fill in the rest in a balanced manner, and the calcium controls the static cling of the plate to attract them in balance. Once that plate is full of properly prepared, ready to eat food it is put in the cupboard for later meals (Humate).
The importance of adding calcium 1st is also apparent. In organics or synthetics.
If you are trying to achieve a certain balance or goal with your soil it will never happen if calcium is out of whack.
Nutrients will lock to each other if calcium isn't there to set the correct electrical field.
You will either have too much or too little food on that colloidal tray if the electrical charge isn't correct for the stage of your grow. Usually a wrong charge will either lock up or lock out a specific nutrient.
Calcium, and to a lesser but equally important degree Magnesium as well, set the stage for all the rest to happen.
Some call this electrical charge EC. I have heard its important. Changing the ec changes the amount of space available on the platter for nutrients.
EC controls many other aspects but without proper food all the other aspects are moot points.
Hope that helps with a mental image of how organics rolls.
As a bonus, if you want to raise your brix just raise calcium phosphorus and microbial life as long as your soil can supply the extra oxygen needed and Voila! brix goes up.
Always keep brix in the back of your mind. Anything that raises brix raises plant health so try to not get in the way of that.