12/12 From Seed Experiment - 21 Strains

Hot Diggity Sog said:

Thank you! I no longer post in this thread but it's cool to see that people still stumble onto it from time to time.

Click to expand...

i am preparing for a new grow now, I ordered over 200 seeds with 15+ strains, you really got me thinking about the 12-12 from seed method....

I have 30 6” diameter x 8” height airpots and an 8’x8’x6’ tent and over stocked with lights. Thinking of using good quality of garden soil mixed with zeolite and volcanic tuff, with treated cow manure. Would you advice if I went with 12-12 from seed?

Naija said:

I have 30 6” diameter x 8” height airpots and an 8’x8’x6’ tent and over stocked with lights. Thinking of using good quality of garden soil mixed with zeolite and volcanic tuff, with treated cow manure. Would you advice if I went with 12-12 from seed?

Click to expand...

Certainly! That sounds awesome...I hope you make a journal and I'll follow along. Otherwise feel free to ask me anything you want. Here to learn and share what I know!

Hot Diggity Sog said:

Certainly! That sounds awesome...I hope you make a journal and I'll follow along. Otherwise feel free to ask me anything you want. Here to learn and share what I know!

Click to expand...

If I eventually go with the 12-12 from seed, I am rethinking my entire "Soil" options, I am thinking the soil mixture I mentioned might be a huge risk for 12-12, since I don't have a veg stage, using the 18-6 will give me time to fix any issues and expand my veg period till I get it all right, but with the 12-12 I think I don't have that flexibility and I should have everything right from the get go.

On the other hand if I want to go with a grow medium other than the soil I mentioned I am limited with one option only and that is basic coco coir with a PH range from 6.5-7.5 and perlite. Fertilisers won't be an issue as I have a wide range of fertilisers available; they are definitely not specialised for cannabis; but I can adjust concentrates and PH easily, I am not worried much about that.

advice needed:
1) 12-12 with soil mixture and see how it goes
2) 12-12 with basic plain coco and perlite
3) Normal veg them flowering with soil mixture

The data of soil mixture I am planning is as follows:

The manure data is:
PH 8.0
Organic matter 51.8 wt/wt%
N 2.2 wt/wt%
P 1.1 wt/wt%
K 2.1 wt/wt%
Na 2.1 wt/wt%
Cl 1.7 wt/wt%
Fe 0.6 wt/wt%
Ca 5.2 wt/wt%

Zeolite is basically rich in Fe, Ca, Si, Al, and traces of P and K; PH is also on the edges of 8

Volcanic tuff and zeolite have great water capture capabilities.

Garden soil I have no idea of what it contains but its rich with no doubts.

my planned ratio is 3 Garden soil : 1 manure : 1 zeolite :1 tuff

I don't have much to offer on your soil - I have very little experience with anything other than hydro. Starting your plants on 18/6 is perfectly fine and if you want to simulate 12/12 from seed, just flip them to 12/12 when they are 6 inches tall or so. If you really want big thick colas, try chopping all of your side branches off. See here for examples: