[c64]

Here I present some plants, from the past and present, which were grown in coco.

My fertilizer are salts.

Basis fertilizer one: 4 – 16 – 32
Nitrate nitrogen content 100%

Basis fertilizer two:
Nitrogen-Calcium part (Calcinit): 15,5% N, 26,5 % CaO
Nitrate : Ammonium ratio (%) 92:8

I dissolve the salts and use a 10% stock solution.

Neutralization of the carbonate hardness and adjustment the pH value of the nutrient solution takes place with nitric acid (sixty percent).

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[c64]

[c64]

[c64]

Those are awesome pictures. I wish they had something in them for size comparison.

[blowingupjake]

What variety is that in pic #4?

Gorgeous!

These shots have me thinking about going back to Coco....

Jake

[Caligreen1]

Great macros of the roots, sounds like your some kind of scientist with all those salts haha

[Dropped Cat]

Nitric acid for the win, I thought i was alone in using it.

How long do you hold the 10% stock solution, I wonder.

Beautiful cannabis, excellent photography.

[c64]

Guys, thank you very much for your kind comments.

@ blowingupjake

In Post #4:
Picture 1, strain: Vantage.
But this selection grow is just running and I found another variation, which will be a keeper. A picture of this Vantage variation comes in a few days.

Picture 2 and 3, strain: Afrokush (different variations). Tropical Seeds Company


@ Dropped Cat

Yeah, with the sixty percent nitric acid I can work better.
The contained nitrogen in the acid I can then adjust over Calcinit to the total requirement.

I make several 1 liter bottles with the ten percent stock solution and place them in the refrigerator.
The contained citric acid in the fertilizer, can begin with long-term storage with mold formation. In the irrigation pipes, the citric acid should prevent limescale deposits.
To prevent the mold formation in the stock solution, I could use preservatives from the food industry, but not really necessary, I find.
A quick consumption and the mold does not form. A direct addition of the salts would be possible, but always weighed before .... there I am too lazy.

[c64]