Photoperiod seedlings.

flowerpower0118 · Dec 7, 2018

Can photoperiod seedlings be placed under 24hr light after week 1 and until their first nodes appear?

CoB_nUt · Dec 7, 2018

CannaCountry · Dec 7, 2018

Yes, but the 24 hours of light is not necessary. Your plants...all plants...want and need a down time. If you don't allow it via 'darkness', the plant will do it on its own. In other words, it will sleep and shut down even with the lights on. No need to waste your money or wear out your light....18/6 would be just as effective.

Lordhooha · Dec 7, 2018

CannaCountry said:
Yes, but the 24 hours of light is not necessary. Your plants...all plants...want and need a down time. If you don't allow it via 'darkness', the plant will do it on its own. In other words, it will sleep and shut down even with the lights on. No need to waste your money or wear out your light....18/6 would be just as effective.

Cannabis is a C3 plant. Meaning it doesn’t need a dark period or a rest during its seedling stage.

bertaluchi · Dec 7, 2018

Lordhooha said:
Cannabis is a C3 plant. Meaning it doesn’t need a dark period or a rest during its seedling stage.

This is correct, I'm a professional medical grower with 30,000 plants, they don't need a dark period in veg

flowerpower0118 · Dec 7, 2018

bertaluchi said:
This is correct, I'm a professional medical grower with 30,000 plants, they don't need a dark period in veg

So just to double check, I can do this for the veg stage aswell?
What about revegged clones? Can I do this with them while they veg?

Lordhooha · Dec 7, 2018

flowerpower0118 said:
So just to double check, I can do this for the veg stage aswell?
What about revegged clones? Can I do this with them while they veg?

Anything I veg I run at 24/7 clones, seeds whatever. I only run regular seeds too.

bertaluchi · Dec 7, 2018

bertaluchi said:
This is correct, I'm a professional medical grower with 30,000 plants, they don't need a dark period in veg

As long as the plants are not flowering you can run the lights 24/7. It works for reveging as well

CannaCountry · Dec 8, 2018

bertaluchi said:
This is correct, I'm a professional medical grower with 30,000 plants, they don't need a dark period in veg

Wouldn't it be fair to say better than 90% of the earth's plants are C3 plants? And does this type of photosynthesis (C3 photosynthesis) actually matter in terms of the question? I will agree, the plant doesn't require darkness to live, however, at what point does it become inefficient to provide light to the plants or does it become inefficient at all? With all that being said, and please don't mistake me as being argumentative (I'm trying to learn something here), with a sample size of 30K plus plants, can you elaborate on the gains you experience in what I'm assuming is a shorter vegetative growth period using a 24/0 photo period vs an 18/6? Is 'time' the only gain, assuming one would veg., regardless of the photo period, to a certain size plant anyhow before inducing flower? More so, if there are substantial gains in 'time' and I'm assuming there are, how much of the gains can be attributed to a closed system (CO2 supplementation) vs. Joe Grower and his ambient air CO2 levels? I'm curious to know your thoughts if you'd care to share. Thanks

Lordhooha · Dec 8, 2018

CannaCountry said:
Wouldn't it be fair to say better than 90% of the earth's plants are C3 plants? And does this type of photosynthesis (C3 photosynthesis) actually matter in terms of the question? I will agree, the plant doesn't require darkness to live, however, at what point does it become inefficient to provide light to the plants or does it become inefficient at all? With all that being said, and please don't mistake me as being argumentative (I'm trying to learn something here), with a sample size of 30K plus plants, can you elaborate on the gains you experience in what I'm assuming is a shorter vegetative growth period using a 24/0 photo period vs an 18/6? Is 'time' the only gain, assuming one would veg., regardless of the photo period, to a certain size plant anyhow before inducing flower? More so, if there are substantial gains in 'time' and I'm assuming there are, how much of the gains can be attributed to a closed system (CO2 supplementation) vs. Joe Grower and his ambient air CO2 levels? I'm curious to know your thoughts if you'd care to share. Thanks

There’s several articles around that say you gain 33% more growth while under 24/7 light. I run three different rooms none of which are co2 supplemented. I’ve done 18/6 and see better growth with 24/7 lighting during veg. As for electricity it’s not much and neither are the bulbs for t5’s which is what I prefer to use with agromax pure par veg bulbs mixed with some 6400k.
As for the C3 question yes a good bit of plant on earth are C3. Then there’s C4 and cam plants. But photosynthesis will be none stop as long as they have light. The rate doesn’t decrease or degrade as the light stays on. It also doesn’t show to have any adverse effects on the plants long term.

reallybigjesusfreak · Dec 8, 2018

I have read in the past that when the lights are off for veg, that's when more root growth happens as the plants aren't using as much energy to consume and transform light into food. Is there any truth to that or is that just an old growers' wives tale? I have minimal knowledge of botany, plants, and how they work, so forgive me if I was misinformed. I try to learn more every day.

Lordhooha · Dec 8, 2018

reallybigjesusfreak said:
I have read in the past that when the lights are off for veg, that's when more root growth happens as the plants aren't using as much energy to consume and transform light into food. Is there any truth to that or is that just an old growers' wives tale? I have minimal knowledge of botany, plants, and how they work, so forgive me if I was misinformed. I try to learn more every day.

I’ll go for untrue for 100 Alex lol. No if they’re constantly growing they’re constantly looking for food as they’re depleting it. I have nice strong abundant roots under 24/7 light.

CannaCountry · Dec 9, 2018

Lordhooha said:
There’s several articles around that say you gain 33% more growth while under 24/7 light. I run three different rooms none of which are co2 supplemented. I’ve done 18/6 and see better growth with 24/7 lighting during veg. As for electricity it’s not much and neither are the bulbs for t5’s which is what I prefer to use with agromax pure par veg bulbs mixed with some 6400k.
As for the C3 question yes a good bit of plant on earth are C3. Then there’s C4 and cam plants. But photosynthesis will be none stop as long as they have light. The rate doesn’t decrease or degrade as the light stays on. It also doesn’t show to have any adverse effects on the plants long term.

Thanks for sharing your thoughts and experiences...this is one of the great things about this place...people sharing.

PrometheanLeaf · Dec 9, 2018

@Lordhooha I figured you'd had been vegging under a cmh?

Lordhooha · Dec 9, 2018

PrometheanLeaf said:
@Lordhooha I figured you'd had been vegging under a cmh?

I did this last just to see how they’d do t5’s veg extremely well and I’m not putting extra time on these bulbs. Plus I’m able to keep them within a couple of inches of the plants making training easier due to its compact nature.

PrometheanLeaf · Dec 9, 2018

I guess my thought is that a decent cmh will allow me to run a shortened veg cycle for a sog run, and not be toooo, bad of a cost compared to buying a new t5 *rip* I'm fine vegging with the 315, though I might grab a growers choice 4k to veg with and use the new Phillips 930 (double jacket) to flower with. (1 space for now)

Lordhooha · Dec 9, 2018

PrometheanLeaf said:
I guess my thought is that a decent cmh will allow me to run a shortened veg cycle for a sog run, and not be toooo, bad of a cost compared to buying a new t5 *rip* I'm fine vegging with the 315, though I might grab a growers choice 4k to veg with and use the new Phillips 930 (double jacket) to flower with. (1 space for now)

I just bought another 4 bulb 4 ft t5 they’re not bad on price 129 bucks. To me it’s far cheaper to replace t5’s even with my discount at my buddies shop any the hortilux or Phillips cost me 87 bucks with tax. The good pur par veg bulbs cost me all of 8 bucks.

bertaluchi · Dec 10, 2018

CannaCountry said:
Wouldn't it be fair to say better than 90% of the earth's plants are C3 plants? And does this type of photosynthesis (C3 photosynthesis) actually matter in terms of the question? I will agree, the plant doesn't require darkness to live, however, at what point does it become inefficient to provide light to the plants or does it become inefficient at all? With all that being said, and please don't mistake me as being argumentative (I'm trying to learn something here), with a sample size of 30K plus plants, can you elaborate on the gains you experience in what I'm assuming is a shorter vegetative growth period using a 24/0 photo period vs an 18/6? Is 'time' the only gain, assuming one would veg., regardless of the photo period, to a certain size plant anyhow before inducing flower? More so, if there are substantial gains in 'time' and I'm assuming there are, how much of the gains can be attributed to a closed system (CO2 supplementation) vs. Joe Grower and his ambient air CO2 levels? I'm curious to know your thoughts if you'd care to share. Thanks

The 24/7 schedule cuts down veg time significantly, but that not the only reason. When plants are moved to flowering the first signs of flowers also apear faster due to the significant change in light schedule. In a produtiopr atmosphere you have to take advantage of everything possible to maximize output. If you're growing at home, choose what is best for you and your wallet. But if you want to maximize your grow and get the most out of it a 24/7 schedule will help .

flowerpower0118 · Dec 12, 2018

CannaCountry said:
Wouldn't it be fair to say better than 90% of the earth's plants are C3 plants? And does this type of photosynthesis (C3 photosynthesis) actually matter in terms of the question? I will agree, the plant doesn't require darkness to live, however, at what point does it become inefficient to provide light to the plants or does it become inefficient at all? With all that being said, and please don't mistake me as being argumentative (I'm trying to learn something here), with a sample size of 30K plus plants, can you elaborate on the gains you experience in what I'm assuming is a shorter vegetative growth period using a 24/0 photo period vs an 18/6? Is 'time' the only gain, assuming one would veg., regardless of the photo period, to a certain size plant anyhow before inducing flower? More so, if there are substantial gains in 'time' and I'm assuming there are, how much of the gains can be attributed to a closed system (CO2 supplementation) vs. Joe Grower and his ambient air CO2 levels? I'm curious to know your thoughts if you'd care to share. Thanks

That is a very good question.
At what point does a cannabis plant's need for light "overflow" like water in a cup?
How much of this light does the plant actually use and how much is just pointless additions to the hydro bill?

flowerpower0118 · Dec 12, 2018

Lordhooha said:
There’s several articles around that say you gain 33% more growth while under 24/7 light. I run three different rooms none of which are co2 supplemented. I’ve done 18/6 and see better growth with 24/7 lighting during veg. As for electricity it’s not much and neither are the bulbs for t5’s which is what I prefer to use with agromax pure par veg bulbs mixed with some 6400k.
As for the C3 question yes a good bit of plant on earth are C3. Then there’s C4 and cam plants. But photosynthesis will be none stop as long as they have light. The rate doesn’t decrease or degrade as the light stays on. It also doesn’t show to have any adverse effects on the plants long term.

Guess That answered my question lol. Shoulda kept reading first...

Photoperiod seedlings.

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