Here we go..

Serious question guys. Has anyone ever ran an auto under 12 12 during flower and or waited til a photo was 4 weeks into flower could you run lights at 18 hours ?

If you run the 4 week into flower one at 18&6 she'll reveg (revert to vegetative growth) and stop flowering.

Don't know about the 12&12 auto, although I've wanted to try my flower light has 50%more power than my veg/ auto light.

I got this same issue right now I have autos that are mid flower and a full scrog net of photos I need to flip but wanted to wait for the autos to finish. Me and my damn inpatient self I just wanted to much to soon.

I just ran out of room had to throw some autos in my photo tent

Fuck it I'll run the autos at 12 12

Exploremore said:

Fuck it I'll run the autos at 12 12

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I'm kinda thinking about it also. I've got 2 Mimosa Cake autos that are about 2 weeks into flower. They have expressed a bit differently so i don't know if the comparison would be valid. I think I'll put the more stretched one under 12&12

Exploremore said:

Fuck it I'll run the autos at 12 12

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I'd like to know how that works out for you

Hiphophippo said:

I got this same issue right nowView attachment 5118562View attachment 5118563View attachment 5118564 I have autos that are mid flower and a full scrog net of photos I need to flip but wanted to wait for the autos to finish. Me and my damn inpatient self I just wanted to much to soon.

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I'd give my left nut for your space! I'm running in a 3x4 & a 4x4.

Usually I only run photos but wanted to see what I could do with a few autos. The net is 5’x10’. I’m too clumsy to run in small spaces

I've run autos on 12/12 for years just so I can run photos alongside. No where does it say autos 'require' anything, only that they 'can handle'...
A bit of yeild may be lost but potency is not affected...may lose a bit in yeild but lower cost & hassle is the real payoff. Growing perpetually , I ain't missed anything yet.

I'll be posting pictures tonight. Gotta wait til the lights turn on. Keep you updated

As long as your DLI is adequate, the autos will do fine at 12\12. For example, 600umol at 18 hours is the same as 900umol for 12 hours when it comes to flux accumulation.

I haven’t had an issue with it before. I’ll have a couple autos running all the time whether or not I’m 18/6 or 12/12

The last picture the plant with the jug on her is my photo. Bag seed from a dispensary. The tall auto in the back is purple haze auto. The shorter one is green crack auto. In the small then are two uk cheese autos. The others are a topped green crack auto and a topped purple haze auto

VincenzioVonHook said:

As long as your DLI is adequate, the autos will do fine at 12\12. For example, 600umol at 18 hours is the same as 900umol for 12 hours when it comes to flux accumulation.

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Disagree with this. That's like saying eating only one big meal a day will keep you as full as multiple smaller meals throughout the day. Giving the plant a shitload of light for a short period isn't equal to less light for longer periods. If photosynthesis happens with light, no matter how much you give it at that 12 hours, more will have been achieved by longer periods of light for photosynthesis to be going on. Do what you will, but if yeild wasn't so important that you want to run autos on 12/12, than why are these guys growing multiple plants? Yeild will ALWAYS matter, and you'll get more of it at 18 to 24 hours of light, not less like 12.

MATTYMATT726 said:

Disagree with this. That's like saying eating only one big meal a day will keep you as full as multiple smaller meals throughout the day. Giving the plant a shitload of light for a short period isn't equal to less light for longer periods. If photosynthesis happens with light, no matter how much you give it at that 12 hours, more will have been achieved by longer periods of light for photosynthesis to be going on. Do what you will, but if yeild wasn't so important that you want to run autos on 12/12, than why are these guys growing multiple plants? Yeild will ALWAYS matter, and you'll get more of it at 18 to 24 hours of light, not less like 12.

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You should read up on how DLI works if that's what you believe. Good to know the whole horticultural industry is wrong. Light is quantifiable whether you want to believe it or not. If your theory is true, that would mean photoperiods would always yield less due to light duration, yet we know thats a farce.

Here's a good way to put it. If enough intensity is provided during the 12 hour light dependent stage of photosynthesis, excess energized electrons are stored and used during the light independent stage (the Calvin cycle) to produce sugars from carbon dioxide.

That's why we use an accumulation of photosynthetic flux over a whole 24 hour period to gauge the amount of energy a plant receives, as that energy is also used during the Calvin cycle to metabolize c02. Doesn't really matter if it's over 10, 12 or 18 hours.. the plant doesn't use all its energy from photosynthesis during the light dependent cycle.

MATTYMATT726 said:

Disagree with this. That's like saying eating only one big meal a day will keep you as full as multiple smaller meals throughout the day. Giving the plant a shitload of light for a short period isn't equal to less light for longer periods. If photosynthesis happens with light, no matter how much you give it at that 12 hours, more will have been achieved by longer periods of light for photosynthesis to be going on. Do what you will, but if yeild wasn't so important that you want to run autos on 12/12, than why are these guys growing multiple plants? Yeild will ALWAYS matter, and you'll get more of it at 18 to 24 hours of light, not less like 12.

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Ive always grown autos on 24 hours of light. I just had that big photo plant and I ran out of room in my 2x4. This is going to be a one off for two autos. Really it's just a space issue. I'll be converting the entire shed to a grow space after this cycle. So kinda just am experiment at this point

MATTYMATT726 said:

Disagree with this. That's like saying eating only one big meal a day will keep you as full as multiple smaller meals throughout the day. Giving the plant a shitload of light for a short period isn't equal to less light for longer periods. If photosynthesis happens with light, no matter how much you give it at that 12 hours, more will have been achieved by longer periods of light for photosynthesis to be going on. Do what you will, but if yeild wasn't so important that you want to run autos on 12/12, than why are these guys growing multiple plants? Yeild will ALWAYS matter, and you'll get more of it at 18 to 24 hours of light, not less like 12.

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Yield doesn't matter to everyone. Some people may want to run multiple plants of different strains or just for experience and practice. Just because it matters to you doesn't mean it does for everyone.

MATTYMATT726 said:

Disagree with this. That's like saying eating only one big meal a day will keep you as full as multiple smaller meals throughout the day. Giving the plant a shitload of light for a short period isn't equal to less light for longer periods. If photosynthesis happens with light, no matter how much you give it at that 12 hours, more will have been achieved by longer periods of light for photosynthesis to be going on. Do what you will, but if yeild wasn't so important that you want to run autos on 12/12, than why are these guys growing multiple plants? Yeild will ALWAYS matter, and you'll get more of it at 18 to 24 hours of light, not less like 12.

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One good meal a day is how i live. I might grab a snack every now and then but one fairly balanced American sized meal is all I need.

I have run Autos at 12/12. I bought a new tent and had a couple of photos I used as mothers to flower off and they looked silly sat in a big tent, so I had a 3 pack of Auto seeds as a freebie, so chucked them in too. They worked well enough.