18/6 vs 24/0 VEG

GrowerGoneWild

GrowerGoneWild

Well-Known Member
24/0 is better from a production standpoint. ... Yes I'm familar with the calvin cycle.

I can place clones where ever I want, since the light is on all the time it frees up alot of space.

It reverses cuttings to veg. I sometimes take cuttings in bloom for monstercropping. Since its already 24/0 I'll know the cuts will revert.

I dont need a timer for every light.

The time spent in veg is minor to the time spent in bloom, so I dont fuss over it too much.
 
FNG Grower

FNG Grower

Well-Known Member
Vostok and others are correct. 24/0 never worked for me (only tried it once). The plants were constantly stressed, and it actually cost me a couple of weeks as they tried to recover. 18/6 is the tried and true standard, but I am currently having great success with a 17/7 cycle.
 
ItsJustMe84

ItsJustMe84

Well-Known Member
FNG Grower said:
Vostok and others are correct. 24/0 never worked for me (only tried it once). The plants were constantly stressed, and it actually cost me a couple of weeks as they tried to recover. 18/6 is the tried and true standard, but I am currently having great success with a 17/7 cycle.
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Hey buddy thanks for the input, what the reason for 17/7? Are you getting ready to switch or have u always kept at that?
 
bryleetch

bryleetch

Well-Known Member
Just so we're all clear... dark reaction is better known as light independent reaction which just means light isn't needed for those reactions to occur not that it needs to be dark for them to occur, seems like some people are misinterpreting that. That whole phenomenon is why you can veg under 24/0 but with more light requires more CO2 and more nutrients in order to yield any better results compared to 18/6 and since CO2 levels are commonly too low for this without CO2 enrichment it is one reason why 18/6 is the favorable photoperiod.
 
ItsJustMe84

ItsJustMe84

Well-Known Member
bryleetch said:
Just so we're all clear... dark reaction is better known as light independent reaction which just means light isn't needed for those reactions to occur not that it needs to be dark for them to occur, seems like some people are misinterpreting that. That whole phenomenon is why you can veg under 24/0 but with more light requires more CO2 and more nutrients in order to yield any better results compared to 18/6 and since CO2 levels are commonly too low for this without CO2 enrichment it is one reason why 18/6 is the favorable photoperiod.
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Thanks for the input dude, when you explain it like that it makes a whole lot of sense, so 24/0 can be beneficial if done right?
 
bryleetch

bryleetch

Well-Known Member
ItsJustMe84 said:
Thanks for the input dude, when you explain it like that it makes a whole lot of sense, so 24/0 can be beneficial if done right?
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Theoretically, I'd love to see a controlled experiment that compares 24/0, CO2 enriched; 18/6, CO2 enriched; 24/0, normal; 18/6 normal with at least 3 plants of the same strain, or clones, in each environment but who has four separate but identical grow areas to implement that.

How would you implement rich c02 levels into your grow room?
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The main ways would to add CO2 would be with suppressed CO2, fermentation, or dry ice. They sell CO2 generators which are a bit pricey but they also sell fermentation kits which go for about $20. Some people are pretty handy and put together makeshift generators or fermentation drip systems but you'd need a CO2 meter in order to check the levels and those go for a pretty penny.
 
GrowerGoneWild

GrowerGoneWild

Well-Known Member
bryleetch said:
Theoretically, I'd love to see a controlled experiment that compares 24/0, CO2 enriched; 18/6, CO2 enriched; 24/0, normal; 18/6 normal with at least 3 plants of the same strain, or clones, in each environment but who has four separate but identical grow areas to implement that.


The main ways would to add CO2 would be with suppressed CO2, fermentation, or dry ice. They sell CO2 generators which are a bit pricey but they also sell fermentation kits which go for about $20. Some people are pretty handy and put together makeshift generators or fermentation drip systems but you'd need a CO2 meter in order to check the levels and those go for a pretty penny.
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Sounds like you've never done co2 enrichment yourself. Dry ice?.. Fermentation, both continue to deliver co2 at the wrong time or are not cost effective.

Compressed co2, Propane or NG burner, or co2 pads. Or the co2 fungus buckets. (still to pricey). Only way to go in my book... I homebrew and I dont bother using a fermenation style system to add co2.

You can calculate co2 with math. if using a burner or compressed source. Its not just co2 you have to change, you need to raise temps, adjust feed.. etc.. I personally dont worry about co2 until the onset of stretch in bloom, that's when the bulk of the plant begins.
 
bryleetch

bryleetch

Well-Known Member
GrowerGoneWild said:
Sounds like you've never done co2 enrichment yourself. Dry ice?.. Fermentation, both continue to deliver co2 at the wrong time or are not cost effective.

Compressed co2, Propane or NG burner, or co2 pads. Or the co2 fungus buckets. (still to pricey). Only way to go in my book... I homebrew and I dont bother using a fermenation style system to add co2.

You can calculate co2 with math. if using a burner or compressed source. Its not just co2 you have to change, you need to raise temps, adjust feed.. etc.. I personally dont worry about co2 until the onset of stretch in bloom, that's when the bulk of the plant begins.
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You're right I haven't, just trying to get some basic info out there about it to help since he asked. Never said they were prefect.
 
C

CannaBare

Well-Known Member
hyroot said:
I've done every veg cycle. 24/0 causes stress imo. Plants need to be able to go into their phytochrome state during sleepy time. I veg 20/4. I run 730nm at lights out to induce pfr state faster.
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How do you feel about 21/3? I remember a post by you a while ago promoting it for veg and cloning. What lighting schedule do you clone with?
And are you using Indagros IR LEDs?
 
hyroot

hyroot

Well-Known Member
CannaBare said:
How do you feel about 21/3? I remember a post by you a while ago promoting it for veg and cloning. What lighting schedule do you clone with?
And are you using Indagros IR LEDs?
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I run 20/4 on all veg. I was experimenting at that time. Yes I run inda gros.

A couple months ago I was running 21/3. it was on accident. I guess I bumped the analog timer. I didn't know it til I was awake one time when it turned off.
 
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