Anyone used Short day cycles 6/12 ??

N

Nocturn3

Well-Known Member
dbo24242 said:
do you think 4/8 would work?
Click to expand...
No, I don't think so. Most strains will not flower until they measure at least 10-12 hours of darkness. I can't remember the exact science behind it, but there is a chemical that builds up during darkness that needs to reach a critical point before the flowering response is activated. If light is introduced before this point, the chemical is depleted and the plant remains in veg mode.

Or something like that. :roll:
 
D

dbo24242

New Member
Nocturn3 said:
No, I don't think so. Most strains will not flower until they measure at least 10-12 hours of darkness. I can't remember the exact science behind it, but there is a chemical that builds up during darkness that needs to reach a critical point before the flowering response is activated. If light is introduced before this point, the chemical is depleted and the plant remains in veg mode.

Or something like that. :roll:
Click to expand...

cool, good answer. I know that cannabis is a short-day flowering annual so the primary factor influencing buds is short nights of 12 hrs or less.
I guess 8 hrs might be too short.
 
headbandrocker

headbandrocker

Well-Known Member
Well i spent all night/morning reading about folkes who tried it,and can honestly say a side by side must be done to see how this works in comparison to 12/12...
I am going to do 2 grows :1 x 6/12 and 1 x 12/12 same strain,same moms,same medium etc so we can see how this works.I might not use co2 to keep it easy,but well see.
Stay tuned
Hbr
 
pitbudz87

pitbudz87

Well-Known Member
headbandrocker said:
Well i spent all night/morning reading about folkes who tried it,and can honestly say a side by side must be done to see how this works in comparison to 12/12...
I am going to do 2 grows :1 x 6/12 and 1 x 12/12 same strain,same moms,same medium etc so we can see how this works.I might not use co2 to keep it easy,but well see.
Stay tuned
Hbr
Click to expand...
wonderful cant wait
 
pinner420

pinner420

Well-Known Member
I'm prettys sure this will make a worthy story for the magazines when finished for the publish. I think it would be uber cool to see how the harvest master stacks against the solotel for round two of testing. By the time you have answeres to this I'll be able to pick up a harvest master pro.
 
johnny961

johnny961

Well-Known Member
I got a heavy duty digital timer from lowes for $18 with up to 14 presets or it can actually duplicate your natural local light cycle if you want.:peace:
 
D

dbo24242

New Member
headbandrocker said:
Well i spent all night/morning reading about folkes who tried it,and can honestly say a side by side must be done to see how this works in comparison to 12/12...
I am going to do 2 grows :1 x 6/12 and 1 x 12/12 same strain,same moms,same medium etc so we can see how this works.I might not use co2 to keep it easy,but well see.
Stay tuned
Hbr
Click to expand...

try 4/8 too XD

I'm gonna add you so I can keep an eye on that test.
 
pinner420

pinner420

Well-Known Member
aknight3 said:
i think the yield would be affected.
Click to expand...
So what we know from the harvestmaster claims thus far are.
1. Harvest time reduced by a week sometimes two.
2. Savings of electricity. I still have a hard time with that especially with whole notion of "plant days" but with the solotel rotations eventually a portion of the rotation will merge into the heat of the day is my only concern. With my 12/12 I get the let my a/c run in the evenging without fighting the sun.???
3. This time duration is " the plants most productive time."
 
B

Badmf

Well-Known Member
This technique is called "Time Shifting" I had a piece on OG many many years ago and an article in some mags. Folks think you're krzy for suggesting anything other than 12/12 lol. I do it different though. First I add time during peak budset 3-5 weeks then cut to 6 on 12 off until the final three which go 4 on 12 off this adusts time but "adds" growth during budset. With this method you save a week but gain yeild!! All strains aren't happy with this but most are. This is the nutshell version as nutes and temps are adjusted as well. Maybe this can shed some lite on the subject. I also did UV experiments so save your time on that one, lol. It works but results are minimal. If you could set em out in full Sun it will add trikes.
 
B

Badmf

Well-Known Member
headbandrocker said:
Great info Badmf!!
How much increase in yield have you noticed?
Cheers
Click to expand...
25% but remember I have this dialed in 1880ppm co2, great oscillating fans recirculating it from the floor, mixed spectrum lighting with a mover. Lanky strains need more LST to fulfill yeilds better than average. Like OG's etc. This isn't for everyone as you need digital timers to "fix" the times or ou'll be getting up at all hours. This is what I did back then not reccomended, lol. All strains have different "dark" trigger times so some may start bloom cycles at 13.2 hours and some more some less. To gauge your strains tiome set time back from 14.5 after two weeks (ou must NOT start plants that were in over 18 hours as they will go automatically) I like to back down to 17 or 16 before going into this "dark" trigger time search. Do the time back 30 minutes every week look for any sign of sex once seen mark that time.
From there on you can use "that" time to trigger bloom instead of arbitrary 12/12. Now on "Time Shifting" I was trying to get plants to finish in less time then the seed companys stated and wanted to lower my electric bills, lol.
BTW you can run Mothers on 4 on 8 off, 4 on 8 off to save juice without starting bloom, thats only 8 hours lites on but still veggin!! Late!!!Bad...
 
B

Badmf

Well-Known Member
The yeild increases are strain dependent, but to be more detailed. The OG's had 25% more yeild than before under "standard" 12/12. For plants with higher yeilds it could be a waste of time with calculating days and digital timers etc. Remember you can make no mistakes!!! I woke up with two alarms for weeks to accomplish this, now there are timers out to ease the transition. Try it on one plant to see if it meets your needs.
 
B

Badmf

Well-Known Member
YaK said:
is the test going to start? has it been started? I hope this thread isnt another empty hypothesis.
Click to expand...
The results have been in for a long time now. Simply relaying the info. As I said it was on OGs forums and in print, just thought you'd be interested. I did these experiments 18 years ago, lol. :blsmoke:
 
You must log in or register to reply here.
Top