Messing with light cycles

SensiBlaze

Member
OK I have grown a few crops now and I am trying to hone my practice to produce the happiest girls possible 100% of the time.. My most recent observation is of the stress the plant encounters at the end of a long day in veg. (18/6) The leaves, though happy as ever, will begin to droop slightly in the last few hours before lights out. Kind of how they droop when the lights ARE out.

I have read some anecdotal statements saying that cannabis can only utilize so much light at once, and after a certain point you are wasting electricity. I see how there could be some truth to this as the sun would never directly hit your plant for 18 hours straight.. If this is true it would make sense that once the leaves start to droop toward the end of the day, the plant has reached its limit and is not using light to its full potential. Which would also correlate with droopy leaves during lights out due to not utilizing light at that time..

I am running this crop on a 16/8 cycle due to summer temps and electricity savings from the 1kW bulb.. Even with 2 hours cut, I still see the "tiredness" of the plants an hour or so before dark..

Next order of business, I have seen people doing a 6/2 schedule to give their plants a good 2 hour break between cycles to process the light they received, which in turn prevents the tired droop and supposedly allows the plant to grow faster due to utilizing all of the light it receives.. I know this would be hard on the bulb, I do. BUT if it's something that would keep my ladies happy AND not be wasting electricity on useless light... It might be something I'm willing to do..

Does anyone at all have any experience with messing with your veg cycle to prevent this "tired" droop? If not messing with the light cycle itself, how did you solve this? Is it seen as an issue among the community? Does the plant in fact stop utilizing light after this droop manifests?
 

Bowtieguy77

Active Member
I can say that after switching from a straight 16 hours veg time to the 6/2 method(uw method) I have noticed a vast improvement in my veg growth! It took 10 days off of my veg time and maybe it’s just me but I think my plants fill in nicer because of the build up of flowering hormones from the 6/2 light method with a lot less stretch. I would not WOULD NOT recommend changing your lighting schedule on plants already growing unless you really strong genetics. I had a crop hermie on me really bad last time I tried to switch the light schedule!
 

hotrodharley

Well-Known Member
The sun shines on mine 18 hours a day right now. They drooped, they perk up. It depends on a lot but mine are getting more than 18 actually. No problems. Veg all summer and then flower inside starting September. I've run them all. 18/6 is a standard for good reasons.
 

hotrodharley

Well-Known Member
I flowered a whole crop in my one room cabin. No tent and it was a pain. It's dark most of the time in winter here. But I gave up. Watched movies. The red light on the television was on always. Light from my iHome. Not a single hermie. Not a single seed. So much for a lot of that BS. 4 different strains photos.
 

Olive Drab Green

Well-Known Member
OK I have grown a few crops now and I am trying to hone my practice to produce the happiest girls possible 100% of the time.. My most recent observation is of the stress the plant encounters at the end of a long day in veg. (18/6) The leaves, though happy as ever, will begin to droop slightly in the last few hours before lights out. Kind of how they droop when the lights ARE out.

I have read some anecdotal statements saying that cannabis can only utilize so much light at once, and after a certain point you are wasting electricity. I see how there could be some truth to this as the sun would never directly hit your plant for 18 hours straight.. If this is true it would make sense that once the leaves start to droop toward the end of the day, the plant has reached its limit and is not using light to its full potential. Which would also correlate with droopy leaves during lights out due to not utilizing light at that time..

I am running this crop on a 16/8 cycle due to summer temps and electricity savings from the 1kW bulb.. Even with 2 hours cut, I still see the "tiredness" of the plants an hour or so before dark..

Next order of business, I have seen people doing a 6/2 schedule to give their plants a good 2 hour break between cycles to process the light they received, which in turn prevents the tired droop and supposedly allows the plant to grow faster due to utilizing all of the light it receives.. I know this would be hard on the bulb, I do. BUT if it's something that would keep my ladies happy AND not be wasting electricity on useless light... It might be something I'm willing to do..

Does anyone at all have any experience with messing with your veg cycle to prevent this "tired" droop? If not messing with the light cycle itself, how did you solve this? Is it seen as an issue among the community? Does the plant in fact stop utilizing light after this droop manifests?
The droop isn’t stress. They know when the lights go out and come on and are anticipating it. Cannabis can run 24/0 with no issues.
 

JohnDee

Well-Known Member
My experience has been to use some lights at the full 18 hours but others (the most intense lights) on a shorter schedule. The idea is to simulate nature better. So plant would wake up to a fairly mellow light intensity...then after 4 or 5 hours, the main lights come on, and blast them with full light intensity for maybe 8 hours. Then back to the lower intensity till lights out. Less heat and electrical usage and I got growth damn close to using all lights full on for 18h. Did something similar in flowering too. But I always kept them on 24 hours. If I move to a different planet...then I may change that.
JD
 

SensiBlaze

Member
I can say that after switching from a straight 16 hours veg time to the 6/2 method(uw method) I have noticed a vast improvement in my veg growth! It took 10 days off of my veg time and maybe it’s just me but I think my plants fill in nicer because of the build up of flowering hormones from the 6/2 light method with a lot less stretch. I would not WOULD NOT recommend changing your lighting schedule on plants already growing unless you really strong genetics. I had a crop hermie on me really bad last time I tried to switch the light schedule!
Awesome I'm glad someone has tried this with good results! I found some keepers so I'll see next go round how they likey :)
 
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