Lighting [Photos]

420AD

420AD

Well-Known Member
Share a little information if you would!

// How do you deal with flipping in geneal?
  • Do you just switch to 12/12 or do you gradually take daytime away and if so: over what period of time?
// About dat 12/12
  • anyone doin something weird like 11/13 or 13/11 and if so: your personal reasons
  • sunrise / sunset script anyone?
  • do you reduce daytime at the end of your flower cycle?
  • dark period before harvest: yes or no(nsense)?
// Light Intensity
  • How much you're running in flower without co2
  • After flipping, at what stage do you go to your maximum output?
  • How fast would you ramp up your lights?
  • Do you reduce the output or rather max it out at the end of your flower cycles?
// Light Spectrum
  • Tell us a bit about your spectrum and what you think you would do if you could set every diode on your LED fixture.
Maybe try to keep it rather short and informational, thanks.

-Herby
 
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Farmer's Hat

Farmer's Hat

Well-Known Member
I will be following this thread.

My response is simple and common. Nothing fancy, just flip to 12/12 at 100% light intensity. I am only running 200w so it doesn't seem to have any negative effects. My light model doesn't have the option to adjust light intensity, otherwise I would play around with that to see how the plants respond to different settings.

On my current run, I plan to reduce the amount of light hours, 30min every week, for the last 3 weeks of flower. Curious to see if it has any visible effects.

Thanks for starting this thread. Really great questions. Eager to hear from more experienced LED growers.
 
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Wastei

Wastei

Well-Known Member
I veg under 12/12 and trying to flower with 8 hours this run until stretch is done and then lower to 6 hours of light. I currently run 500w and vegged under 100-350w LED. When I lower to 6 hours I will increase to max intensity and 650w in a 4x4.

I run lower light intensity in early flower and increase gradually and lower intensity at the end of flower to combat mold and lower humidity and temps at the end while still letting the plants transpire properly.
 
Farmer's Hat

Farmer's Hat

Well-Known Member
Wastei said:
I veg under 12/12 and trying to flower with 8 hours this run until stretch is done and then lower to 6 hours of light. I currently run 500w and vegged under 100-350w LED. When I lower to 6 hours I will increase to max intensity and 650w in a 4x4.

I run lower light intensity in early flower and increase gradually and lower intensity at the end of flower to combat mold and lower humidity and temps at the end while still letting the plants transpire properly.
Click to expand...
How many plants in the 4x4? Is your approach similar to SOG style? Clones or seeds?
 
Wastei

Wastei

Well-Known Member
Farmer's Hat said:
How many plants in the 4x4? Is your approach similar to SOG style? Clones or seeds?
Click to expand...
I ended up running one plant in a 4x4. I was away on holiday for two weeks and one auto feed got clogged so I'm down to one plant in flower. She was vegged for 3 weeks and then put in the flower tent before flip.
35854.jpg
35856.jpg
25 days from flip and she will go for about 95 days. Maybe I can lower that to 80-85 days with the new schedule?
 
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GreenGenez421

GreenGenez421

Well-Known Member
18/6 all throughout veg
48hrs of complete dark at flip
12/12 for the vast majority of my plants, but I've got a few that I'll take down to 8/16. Some of my sativas just never seem to finish up, just keep throwing new waves of pistils.
 
420AD

420AD

Well-Known Member
Wastei said:
I ended up running one plant in a 4x4. I was away on holiday for two weeks and one auto feed got clogged so I'm down to one plant in flower. She was vegged for 3 weeks and then put in the flower tent before flip.
View attachment 5448194
View attachment 5448195
25 days from flip and she will go for about 95 days. Maybe I can lower that to 80-85 days with the new schedule?
Click to expand...
Welcome to the grow journals!
oh wait... :bigjoint:
 
420AD

420AD

Well-Known Member
I did 13/11 with lower DLI this run gonna try the opposite next run.

No sunrise / sunset, but I kinda get the feeling it would be a nice feature to have.

Will try to reduce the daytime at end of flower this run and see if they stay in better shape.

I used to let em sit in the dark for 24h. I didn't do it this year and couldn't tell you any difference.

Same goes with flushing, used to flush 2 weeks before, just gave 'em water only for their last 2 feedings and it was the same result for me personally.

I ran between 700 and around 1100 umols so far depending on how the strain took it.

I just flipped and I will turn up the lights a little day by day now and see how the plants like it.

I never reduced the daytime or light intensity at the end of the runs but I'll try it this run.

As far as spectrum goes, my boards have full spectrum 3000k / 5000k chips RED 660nm and IR 760nm chips.

I guess the only complains I have is that I'd like to turn off the IR chips when it gets hot and maybe add some form of UV.
 
cdgmoney250

cdgmoney250

Well-Known Member
I run veg plants at 16/8 and make sure the lights are at full power by the time I flip. I just flip to 12/12 and lose 4 hours from one day to the next. No gradual reduction for flower flip.

For the flower period, the daytime hours get reduced gradually from 12/12 down to 10/14 (usually starting around weeks 3-4). Will eventually have the lights on a sunrise/sunset function. I also drop the light intensity in 5% increments for the last 2-3 weeks, and gradually reduce the room temp/humidity the several weeks as well. No dark period before harvest, just gradual changes.

I had an equipment failure last run and ran an average of 1200-1400ppfd light intensity over most of the canopy without CO2. But I would always run CO2 at 1200-1400 ppm. Regardless of light intensity.

I run Fluence Spydr 2i fixtures with a fairly generic spectrum (but well balanced imo).

IMG_1795.jpeg

If I had my way (which is a current project of mine) I would tweak the spectrum as follows (RED LINE):

IMG_1795.jpeg
 
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Baron von Bud

Baron von Bud

New Member
Wastei said:
I ended up running one plant in a 4x4. I was away on holiday for two weeks and one auto feed got clogged so I'm down to one plant in flower. She was vegged for 3 weeks and then put in the flower tent before flip.
View attachment 5448194
View attachment 5448195
25 days from flip and she will go for about 95 days. Maybe I can lower that to 80-85 days with the new schedule?
Click to expand...
From one plant that is amazing. Truly impressed. How many ounces will you get off that?
 
Wastei

Wastei

Well-Known Member
Baron von Bud said:
From one plant that is amazing. Truly impressed. How many ounces will you get off that?
Click to expand...
Last run was a seed(8x) run and it ended at ~770g after drying, roughly 27 ounces. Some plants didn't yield much and some a couple of hundreds grams. I choose the most producing specimen and will be happy with anything around 800 grams.
 
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xox

xox

Well-Known Member
i just flip to 12/12 nothing special. i do measure light intensity using an a apogee meter i saw this chart online cant remember where i screen capped it from seems to do alright at least for flowering

54FEB455-6AAC-4710-9D78-A6B5F258F70F.jpeg
 
Star Dog

Star Dog

Well-Known Member
I got tired putting in effort for a big pile of crap at the end, so I started a different approach and learned a ton.

Vegging seeds from 12-12 tbh it's the best move I've made for growing manageable sized plants, more of them and faster than before.
20240306_120703.jpg20240310_131625.jpg20240310_131952.jpg
I only bargained for a clone and a tester but all my heaviest plants have since been grown with 12-12
IMG_20230504_000733 (2).jpg
There's still a vegging period of around 4wks then afterwards it's in flower mode, altering the timer to 11-13hrs after sexing speeds things up, before trying 11-13hrs (after vegging with 12-12) I never had plants look remotely ready at circa 45 days.

Gorilla Glue #4 Community Journal

Reversed plants have been pulled. We're definitely seeded. How do you know when to pull em for seeds? I hope to perform a reversal one day. So freaking cool, and I don't have room for clones/mothers.
www.rollitup.org
It's one of those things I'd like to have learned years back...
Seeds started 1st December
(31 days old)
20250101_190944.jpg
20250101_190820.jpg
20250101_190147.jpg
I wouldn't grow seeds any other way now.
 
420AD

420AD

Well-Known Member
Star Dog said:
I got tired putting in effort for a big pile of crap at the end, so I started a different approach and learned a ton.

Vegging seeds from 12-12 tbh it's the best move I've made for growing manageable sized plants, more of them and faster than before.
View attachment 5448426View attachment 5448427View attachment 5448428
I only bargained for a clone and a tester but all my heaviest plants have since been grown with 12-12
View attachment 5448429
There's still a vegging period of around 4wks then afterwards it's in flower mode, altering the timer to 11-13hrs after sexing speeds things up, before trying 11-13hrs (after vegging with 12-12) I never had plants look remotely ready at circa 45 days.

Gorilla Glue #4 Community Journal

Reversed plants have been pulled. We're definitely seeded. How do you know when to pull em for seeds? I hope to perform a reversal one day. So freaking cool, and I don't have room for clones/mothers.
www.rollitup.org
It's one of those things I'd like to have learned years back...
Seeds started 1st December
(31 days old)
View attachment 5448436
View attachment 5448437
View attachment 5448438
I wouldn't grow seeds any other way now.
Click to expand...
May I ask what are those two short white plastic pipes for that are hanging down?
 
Star Dog

Star Dog

Well-Known Member
420AD said:
May I ask what are those two short white plastic pipes for that are hanging down?
Click to expand...
In the pic dated May 3rd?
There's two cardboard tubes (left) and a inkbird data logger.

The cardboard tubes prevent the temp probes picking up radiated heat from the light and only measures the ambient temps.
 
futurebanjo

futurebanjo

Well-Known Member
@stardog very interesting... sounds promising as I usually get overcrowded, but thats my lazy/lack of LST/netting

I'm vegging 24hrs light at the mo, as an experiment, I usually do 18/6.

12/12 all the way though is interesting... it will save quite a chunk of electricity over the cycle, if nothing else.

In terms of flipping the light schedule, I just flip them straight to 12/12 at a time that suits me... I usually have the plants day time at my night time during flower, for temperature stability in winter.
 
futurebanjo

futurebanjo

Well-Known Member
420AD said:
Share a little information if you would!

// How do you deal with flipping in geneal?
  • Do you just switch to 12/12 or do you gradually take daytime away and if so: over what period of time?
  • Just straight flip the timer, no messing about
// About dat 12/12
  • anyone doin something weird like 11/13 or 13/11 and if so: your personal reasons no
  • sunrise / sunset script anyone? eh? no.
  • do you reduce daytime at the end of your flower cycle? no
  • dark period before harvest: yes or no(nsense)? no
// Light Intensity
  • How much you're running in flower without co2 no idea 300w LED that has a dimmer
  • After flipping, at what stage do you go to your maximum output? I gradualy crank up the power in veg so I'm at 100% before I flip to flower, but my light is 'only' 300w LED
  • How fast would you ramp up your lights? as above
  • Do you reduce the output or rather max it out at the end of your flower cycles? no..I run att 100% until harvest time, then I just shut everything off.
// Light Spectrum
  • Tell us a bit about your spectrum and what you think you would do if you could set every diode on your LED fixture. My light has a bit of 'far red' spectrum which allegedly helps but who knows, it's my first and only LED so I have no comparison- see pic below - it has a spike in the far red range...
Maybe try to keep it rather short and informational, thanks.

-Herby
Click to expand...
2.png
 

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