CUSTOM LIGHTING SCHEDULE DURING BLOOM

[PurpFan]

This is totally off topic but while searching for a new grow light I stumbled upon an led light on the letgo app. It was a Platinum Led P450 in like-new condition. In the description the seller claimed that it had only been used for about a week 1/2. The price was only $120 and this was a $540 light!!! The seller stated that he was moving to Bali, Indonesia soon. I immediately thought to myself that it had to either be a scam or perhaps the light was flawed or damaged in some way. To top it off I noticed that it had been posted for nine days already so I was certain that if it was legit someone most likely would've snatched it up by then. But I decided to inquire about it regardless and the seller responded promptly and said that it was indeed still available, but he had already moved to Bali (I live in California by the way). He told me that I could deal with his roommate in order to make the purchase. He assured me that I'd be able to test the light for obvious purposes.

Now here's the kicker... When I went to buy the the light I took a friend with me (you can never be too careful) being that I was making a purchase from a stranger. We arrived at a very nice beachside apartment building and when we entered the unit I noticed a bunch of "grow-related" items lying on the floor of the hallway entrance. Now before I continue let me say that I'm not sure of the circumstances in which a person would just up and leave a very nice high class beachside apartment in order to move to Indonesia so suddenly (not that there's anything wrong with Indonesia) but it looked a bit sketchy. Especially because of the roommate's attitude both on the phone and in person. Over the phone he made it clear that the transaction was a huge inconvenience for him and in person you could tell that he just wanted me and my friend to hurry up and get out of his apartment. He even refused to let me check the condition of the light! After a quick debate he let me check it and it was in fact BRAND NEW!!! I couldn't believe that I actually got that light for only $120! Now on the way out I noticed that the small pile of grow related items on the hallway floor had an activeaqua air pump with a $5 price tag on it. As I passed by the items the guy stopped me and pointed to the items and said "this too" referring to the pile of items. I couldn't believe my eyes this guy was giving all of that stuff away. After thinking over the incident it was clear that the guy just wanted every bit of his ex-roommate's horticulture items out of his apartment and boy did I come up!!!

There was a 4port air pump w/ tubing, two air stones, light socket splitters, lantern style light chords, ratchet hangers, a fabric smart pot, straps for hanging filters, a 200w cfl bulb w/ lantern style chord, a taotronics grow light bulb, and a brand new pair of METHOD 7 GLASSES!!! Everything was brand spanking new except for the lantern style chord for the cfl bulb. Not to mention there was even an old cellphone case that had a small baggie taped to it with five seeds that were labeled "CBDx"!!! The coolest haul yet in my eyes...

 

[weedleg]

I always thought it would be cool
To do a shorter day/night , like create a 20 hour day or whatever. Would make a pretty huge difference over a year if it worked and a guy had the right strain.

 

[somebodyhearted]

Why would the extended day stuff lengthen flowering time? Jw

if the plant is in the vegetative state caused by longer day light flowers will not form as quickly because hormones are directing the plant to continue to vegetate while pre flowering. buds will not finish on time, fully expressed either

 

[Dryxi]

https://www.khanacademy.org/science/biology/plant-biology/plant-responses-to-light-cues/a/phototropism-photoperiodism

https://cannabisdigest.ca/dr-allens-16-hour-dark-photoperiod/

A very good read. One can make their own observations

 

[Dryxi]

if the plant is in the vegetative state caused by longer day light flowers will not form as quickly because hormones are directing the plant to continue to vegetate while pre flowering. buds will not finish on time, fully expressed either

For some reason I feel like it isn't the length of light controlling a dark dominate photoperiod plant. Cannabis falls into the short-day group, which is mostly a dark dominated group. The links I posted are good info.

The second link is an example of a over 24hr schedule. I don't know if he tested it out more though.

 

[torontoke]

Why would the extended day stuff lengthen flowering time? Jw

As it’s already been mentioned in this thread mj is a plant that is triggered to flower when the dark period is equal to or longer then the light period.
If you extend the light on to 16 hours like mentioned in the op then You would need at least a 16 hour dark which would mean yours running a 32 hour day. If the specific strain typically runs 50-60days (reg days) then yours would actually be 75-90 days in total hours. Seems longer to me?

 

[Dryxi]

As it’s already been mentioned in this thread mj is a plant that is triggered to flower when the dark period is equal to or longer then the light period.
If you extend the light on to 16 hours like mentioned in the op then You would need at least a 16 hour dark which would mean yours running a 32 hour day. If the specific strain typically runs 50-60days (reg days) then yours would actually be 75-90 days in total hours. Seems longer to me?

I see what your saying there

 

[SSGrower]

As it’s already been mentioned in this thread mj is a plant that is triggered to flower when the dark period is equal to or longer then the light period.
If you extend the light on to 16 hours like mentioned in the op then You would need at least a 16 hour dark which would mean yours running a 32 hour day. If the specific strain typically runs 50-60days (reg days) then yours would actually be 75-90 days in total hours. Seems longer to me?

It seems rather unlikely that yield or potency or any combination of quality metrics would increase by 33%. When I began thinking about non 24 cycles I did not even consider how the plant might react, but rather looked at it from a quantum physics perspective of time contraction and length dilation.
Identical synchronized atomic clocks will read different when one is flown around the world.
A train a mile long traveling near the speed of light can fit into a tunnel 10ft long.
A human on that train will age more slowly than a human standing next to the tracks.

This is why I decided to try 10/10, eventually I will have to collect g/kwh info.

 

[Budley Doright]

I don’t have the space, plant count or motivation to try this but I say have at er, if you do this, start a thread.

 

[Dr. Who]

Hey guys....Yup, I am alive..
Nope, some time off.....

Torontocote is correct....

To SSGrower's comment, I'll add this;

Reducing light to shorten bloom times does have an effect. Thing is, as you increase lights out times you reduce yield. I have found it to be a bell curve of loss after going lower then 10/14 to 9/15 in a general sense.
Yet, 12/12 is just an industry or educational "standard" for blooming plants.
"I" much prefer to bloom at 11/13.
"I" see better plant stability, and loose no measurable yield amounts in any strain I have yet grown at that sched.
As an example of stability. I have a "friend" that sent me some clones of plants he had herm on him. NOT just nanners but, full on ball throwing.
I have had NONE of that expressed in the growing out of the clones he sent in MY environment....NONE!

In fact, the strain is rather "rare" and is one of the most requested products by Chicago contacts....

I feel that is a "part" of the story of the problem.

 

[hillbill]

It was explained as requiring very intense light.

 

[InTheValley]

well, Im tryin 6 on 10 off for flower.

Just about to get rolling on them. I currently have seedlings at 18 days old, topped, and just waiting for sex now. Then im going to pull males, flip to 10 on- 6 off, for 2 weeks, then Flipping to 6 on/10 off for flower. I will be using Night initiation reds.

Im thinking in terms of DLI accumilation.

Will be starting the thread on this experiment.

evolve the 16 hour day. Wondering if I can actually breed a 16 hour day plant.

 

[hillbill]

Wonder if I could breed a 16 hour day boy/girl plant.

 

[InTheValley]

Something also i want to add. On this run, i have a Triploid seedling, that im going to clone to see if the genetics carries on, then bread it if all goes well.. Thats even if its a female. should know in a few days. that too has been topped already. fun fun

 

[InTheValley]

OK, im actually going to be staying in Flower mode. So, when they show sex, I will switch to 6on/10off. Currently 12/12, ( 12 on/12off/+2From night puck) So really, 12on/14off. Been hammering them with Photons, ( 40,000lux ), 600ish PAR..will post the journal link for this grow. I tryed realllly hard to see if alot of light stopped the stem elongation, but it just seems the way the genetics are. The father plant got to 44 inches in like 38 days using this same light. This is a FireOG/Bagseed cross i created. stay tuned, should be fun. Currently 19 days from seed, started on 12/12

 

[Dr. Who]

well, Im tryin 6 on 10 off for flower.

Just about to get rolling on them. I currently have seedlings at 18 days old, topped, and just waiting for sex now. Then im going to pull males, flip to 10 on- 6 off, for 2 weeks, then Flipping to 6 on/10 off for flower. I will be using Night initiation reds.

Im thinking in terms of DLI accumilation.

Will be starting the thread on this experiment.

evolve the 16 hour day. Wondering if I can actually breed a 16 hour day plant.

Um, did we have a problem in math class? I get your idea but, not to sure how well that will work..

6 on,then 10 off...Umm what do you do with the other 8 hrs?
Light back on for 6 hrs again?

I tried the 730 nM band LED's. Not too impressed is the best I can say about them. Claimed yield increases by the makers are, well, about as truthful as Trump when he opens his mouth.

Bottom line, your doing 12/12.. Still, keep us informed and take confirming pictures with each post please.
Interested enough to want to "see" what you get from that...

It should be noted that things like what your doing, have been tried before,,,,somewhere. If it worked, or made a positive difference...We would all be doing it that way...
Same for the 730 nM LED sets....If they actually worked well.......
Get my point?

 

[InTheValley]

Um, did we have a problem in math class? I get your idea but, not to sure how well that will work..

6 on,then 10 off...Umm what do you do with the other 8 hrs?
Light back on for 6 hrs again?

I tried the 730 nM band LED's. Not too impressed is the best I can say about them. Claimed yield increases by the makers are, well, about as truthful as Trump when he opens his mouth.

Bottom line, your doing 12/12.. Still, keep us informed and take confirming pictures with each post please.
Interested enough to want to "see" what you get from that...

It should be noted that things like what your doing, have been tried before,,,,somewhere. If it worked, or made a positive difference...We would all be doing it that way...
Same for the 730 nM LED sets....If they actually worked well.......
Get my point?

Yeah man, i get what your saying..

and Yes, 6 on, then 10 off, then 6 on, then 10 off, and so one. Currently drawing up my time chart to program my sonoff with the times needed. Going to be a pain, but just takes a few minutes a day, to maybe cut time by 40%.

Remember, Im doing DLI accumulation theory, to kind say. Then, enough night to keep in flower mode. If i pound them with photons, then they can rest and grow at night. This strain makes some nice sized buds, so Im not even concerned with smaller buds, because the big colas tended to be sustainable to rot easier then the smaller buds. Im doing this from seed, just to get the outcome results ASAP. I already know this strain does very well from 12/12 from seed to harvest, so i do have something to compare it too.

I will for sure take pics on this, will have link up later today for this project. But your right about the 730's, thats another reason Im doing this, to see if the 2 hour instant night time cut off is legit or not.

 

[InTheValley]

didnt get to the thread start yet. If this works out, it will take 45 days to flower a 10week strain. So knocking 25 days of the flower phase. an 8week strain will take 36 days, and a 6 weeks strain will take 27 days to finish,lol, thats pretty fast.

 

[Budley Doright]

Um, did we have a problem in math class? I get your idea but, not to sure how well that will work..

6 on,then 10 off...Umm what do you do with the other 8 hrs?
Light back on for 6 hrs again?

I tried the 730 nM band LED's. Not too impressed is the best I can say about them. Claimed yield increases by the makers are, well, about as truthful as Trump when he opens his mouth.

Bottom line, your doing 12/12.. Still, keep us informed and take confirming pictures with each post please.
Interested enough to want to "see" what you get from that...

It should be noted that things like what your doing, have been tried before,,,,somewhere. If it worked, or made a positive difference...We would all be doing it that way...
Same for the 730 nM LED sets....If they actually worked well.......
Get my point?

There are lots of techniques that people claim work well and others don’t have much luck doing and it hasn’t become mainstream. Gas light routine, defoliation, to name a couple, so hats off to op for trying, if it works for him great and it’s only a plant, not a mankind changing experiment. Just sayin. And yes at least I got the part about the lights going back on after the off cycle lol.

 

[Dr. Who]

There are lots of techniques that people claim work well and others don’t have much luck doing and it hasn’t become mainstream. Gas light routine, defoliation, to name a couple, so hats off to op for trying, if it works for him great and it’s only a plant, not a mankind changing experiment. Just sayin. And yes at least I got the part about the lights going back on after the off cycle lol.

"Defoliation" The biggest problem here is the definition of the term. Then followed by the application of it by some who don't truly understand the the definition. At least as it should be defined for our application...Hot button topic to be sure.

GLR. This works, period! This is a common greenhouse practice. Used to reduce overhead electrical costs. Perfect example: Poinsettias! Nelson's Greenhouse guide has a chapter on it... This book is not cheap but, if you can manage to pony up for it. I suggest you do.