Should i run my lights 24hrs for seedlings

11Ron11 · Feb 2, 2022

Seeds are:
Critical fast bud autoflower.
I read that it's good to run your lights for 24hrs for the first week to help the seedlings create more roots faster.
Is this recommended or will it add stress to the plant as it would have no down time I'm currently 5 days in soil.
I'm running 18 on 6 off I was going to run this time through out the whole process.
I also read that dimming the lights to 50% for 6hrs is good for seedlings.

2Bad · Feb 2, 2022

Sounds like your making it more complicated then it needs to be. Personally I think their cycardian rhythm might not like what you're doing they like consistency and sleep.

11Ron11 · Feb 2, 2022

2Bad said:
Sounds like your making it more complicated then it needs to be. Personally I think their cycardian rhythm might not like what you're doing they like consistency and sleep.

I'll be keeping my lights at 18 on 6 off unless there is some experienced guys that put there lights at 24 hrs for the first week and have good results..

quirk · Feb 2, 2022

You're good with 18/6 and I would suggest against dimming, whether for 6hrs. or 1hr.

Moe.Red · Feb 2, 2022

Only reason to keep the lights on would be to maintain temps if you are not well controlled / insulated or you have a cold lung room.

18/6 is my recommendation.

GreatWhiteBud · Feb 2, 2022

I use LED, I found that my plants liked having 24 hrs of light until the flip.

No issues.

2Bad · Feb 2, 2022

GreatWhiteBud said:
I use LED, I found that my plants liked having 24 hrs of light until the flip.

No issues.

Sounds like you're just wasting electricty . But fuckk ittttt

2Bad · Feb 2, 2022

But as long as ur not growing many plants it’s probably not that much, I could only imagine my setup when u said that which is more then one light and 8 extra hours a day would add up to over time. My setup is 3 lights so I could imagine like an extra $25-$45 a month on top of my already $250 electricity bill lmao. To each his own .

Moe.Red · Feb 2, 2022

Running 24 hour veg is pushing the plants. Its a grower style thing.

There are obviously 2 camps. One is essentially "grow more weed faster" and the other is "sacrifice yearly poundage produced for higher quality."

All things being equal, 24 hours gives a faster growth rate.

On the other side plants actually do stuff at night. Important processes. I have proven to myself via testing that how the plant is vegged has an impact on cannabinoid profile in the finished plant. In general terms, the ones you baby are more complex.

You decide.

Cypress66 · Feb 2, 2022

11Ron11 said:
Seeds are:
Critical fast bud autoflower.
I read that it's good to run your lights for 24hrs for the first week to help the seedlings create more roots faster.
Is this recommended or will it add stress to the plant as it would have no down time I'm currently 5 days in soil.
I'm running 18 on 6 off I was going to run this time through out the whole process.
I also read that dimming the lights to 50% for 6hrs is good for seedlings.

The photoperiod plants grow in 18/6 for veg and it may be okay for autos but they are sometimes growing in a 20/4 light cycle by many growers of auto plants. You are probably better off talking to someone who is a auto grower with experience of the light and the cycles You’re not going to be needing a lot of light to grow your young plants and they only need something like a t5 or a led light of higher power and the dimmer on the 30%/50% is better to have a lux meter and then you can get a better idea of the intensity and adjust it I used to have my lights on the young plants for 24hrs I thought it would be better for them to grow. The only thing that is going to be happening is the electric bill will be a lot more than the 18/6 but that’s the photo but I don’t think it would be any benefit to running the light for the 24hrs unless you can do them under a 24hr cycle for the complete growing period ? If they are going to be getting a 20/4 or a 18/6 i would be the same for the whole grow only grown autos in my early years and I have not been lucky with them personally peace

11Ron11 · Feb 2, 2022

Moe.Red said:
Only reason to keep the lights on would be to maintain temps if you are not well controlled / insulated or you have a cold lung room.

18/6 is my

GreatWhiteBud said:
I use LED, I found that my plants liked having 24 hrs of light until the flip.

No issues.

GreatWhiteBud said:
I use LED, I found that my plants liked having 24 hrs of light until the flip.

No issu

2Bad said:
Sounds like you're just wasting electricty . But fuckk ittttt

This is what I'm wondering.
I'm growing autoflower so the light cycle shouldn't matter.
But is the maybe extra 6 hrs of growth worth it.

Moe.Red · Feb 2, 2022

11Ron11 said:
I'm growing autoflower so the light cycle shouldn't matter

I disagree with this statement. Flipping from veg to flower doesn’t apply but I still think plants need a night to be the best version of themselves.

11Ron11 · Feb 2, 2022

2Bad said:
But as long as ur not growing many plants it’s probably not that much, I could only imagine my setup when u said that which is more then one light and 8 extra hours a day would add up to over time. My setup is 3 lights so I could imagine like an extra $25-$45 a month on top of my already $250 electricity bill lmao. To each his own .

That's crazy I'm only doing this as a hobby and I'm into it for 1000 in equipment.
I bought all energy efficient stuff so intotal less electricity then my computer.

juggernaut · Feb 2, 2022

Either 18hrs or 24hrs work. I've tried both and I like 18 hrs. saves electricity. not much but both were pretty much equal.

11Ron11 · Feb 2, 2022

Moe.Red said:
I disagree with this statement. Flipping from veg to flower doesn’t apply but I still think plants need a night to be the best version of themselves.

Not to confuse I'm not giving advice I'm asking for advise.
Based on your last comment and others.
The risk to reward is not worth it.
I'll be growing 18 on and 6 off for the full cycle.
Cheers.!

1diesel1 · Feb 2, 2022

I run everything 24/7 lights on with seedlings,
Clones and veg plants. I have never seen any difference when using 6 hours lights out.

seedlings, 24 hrs lightclones 24 hrs lightclones in veg, 24 hr light (most are 2 month clones at this point).
Larger plants are mothers.
The only time these plants see dark is when I do my maintenance spraying every 5-7 days and they only see 2 hrs of dark that day.
Totals approximately 8-10 hrs darkness a month……if that.
I have zero issues with growth.
Hope that helps:)

E9noxis · Feb 2, 2022

Can you rin autoflowers at 12 12 if light cycles aren't too important? Or is 18 6 the least daytime you can give? Do you have to flip to 12 12 when they flower themselves?

Moe.Red · Feb 3, 2022

11Ron11 said:
Not to confuse I'm not giving advice I'm asking for advise.
Based on your last comment and others.
The risk to reward is not worth it.
I'll be growing 18 on and 6 off for the full cycle.
Cheers.!

As 1diesel1 has shown, it is totally possible and a style of growing to not turn the lights off.

This is an interesting read:

Frontiers | Dark-Induced Hormonal Regulation of Plant Growth and Development

The sessile nature of plants has made them extremely sensitive and flexible towards the constant flux of the surrounding environment, particularly light and ...

www.frontiersin.org

I have done testing on lots of plants in veg to see what steers them. At the time I was trying to coax THCV out of photo plants. What I can tell you is cannabinoid production starts much earlier than I expected. I did not test 24hour lights, nor have I tested on autos.

We don't fully understand everything about all this and to be honest there are too many variables to make blanket statements. But I think there have been enough studies done to start to get a basic hypothesis together on what would be the best method, and follow it up with personal testing.

Clearly, it works either way and unless you are driving for something specific, we may be picking fly shit out of pepper with this one lol

Moe.Red · Feb 3, 2022

2Bad said:
Sounds like you're just wasting electricty . But fuckk ittttt

I'm not sure this is the case, but I can see how you got there.

You are assuming that the plant does not grow / finish 25% faster with 25% more photons in a given time. If it does, no electricity is wasted.

Personally I don't know if it does or not.

GetOffMyLand · Feb 3, 2022

let the plant tell you. you will see a response. all the data provided was gold. i jus know, some ladies are picky. talk to them

Should i run my lights 24hrs for seedlings

Should i run my lights 24hrs for seedlings

11Ron11

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