18 or 24 hours in VEG

Bucsfan80

Bucsfan80

Well-Known Member
He didn't ask for advice or I wouldn't have replied because I don't know and I don't give advice on stuff I don't have experience with
 
drsaltzman

drsaltzman

Well-Known Member
HydoDan said:
24/0 for the first two weeks, then 20/4 for two weeks, then 18/6 for two weeks, then 12/12 till done.
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This seems completely opposite of how cannabis grows in nature.
Seedlings get more light as the summer solstice approaches, not less, before they flower.
But heck, they don't also only get 6 weeks of veg, or flip to 12/12, in nature either.
What we do to the plant makes you wonder how every indoor plant doesn't hermie from the stresses we put on it.

I've done both 18/6 and 24/0. No noticeable difference other than I had to lower the power on the lights to run 24/0, otherwise the plants would droop.
Now I just keep it 18/6 from the start until flower.
 
HydoDan

HydoDan

Well-Known Member
drsaltzman said:
This seems completely opposite of how cannabis grows in nature.
Seedlings get more light as the summer solstice approaches, not less, before they flower.
But heck, they don't also only get 6 weeks of veg, or flip to 12/12, in nature either.
What we do to the plant makes you wonder how every indoor plant doesn't hermie from the stresses we put on it.

I've done both 18/6 and 24/0. No noticeable difference other than I had to lower the power on the lights to run 24/0, otherwise the plants would droop.
Now I just keep it 18/6 from the start until flower.
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I've been thinking about starting at 18/6 then dropping an hour a week until I hit 12/12. A little slower transition may help with stretch and be a little more natural.
 
twentyeight.threefive

twentyeight.threefive

Well-Known Member
Bucsfan80 said:
I said living thing not human lol. I thought it was a thoughts and discussions thread not who's right and wrong.
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It is a thoughts and discussion thread. You posted your thoughts and I discussed why some points were incorrect.

You may have said living thing, but that's such a broad term. C3 plants do not need darkness. Despite your thoughts that they might like rest.
 
yummy fur

yummy fur

Well-Known Member
I've always wanted to try the 36 hour day flowering, but I never had the opportunity. Why not give that a go?

During flowering 24 hours on 12 hours off.
 
yummy fur

yummy fur

Well-Known Member
bubba73 said:
Wow ! That’s a light schedule……
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Yeah it was suggested to me over 25 years ago by my local hydro guy he was heavily into breeding and gave me some excellent clones and he was generous with his knowledge. The idea being that it's the 12 hours of darkness that triggers for photoperiod. So using the 24/12 means that over three days the plants get 2 x 12 hour dark periods instead of 3 x 12 hours therefore an extra 12 hours of light every 3 days.

Or it can be 18 hours on 12 hours off for a more gentle test, so that's a 30 hour day.

HydoDan said:
Circadian Rhythm!
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More rhythm than the 24 hour always on lights that some auto growers use. Or 24 hours in photo period veg as per this thread.
 
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