24 hour light vs. 18/6.

Sencha

Sencha

Active Member
Hey everyone. I've made my way through the various stages of research for my first indoor grow. However, I've seen that some people veg under 24 hour light and some under 18/6. Recently I spoke with a person from Cali who has published work in the Cannabible. He said that no MJ plant, UNDER ANY CIRCUMSTANCES, should ever be given 24 hour light. "It's only wasting electricity."

Is this true? Thanks in advance.
 
bobbyhopefeild

bobbyhopefeild

Active Member
ive tested both 24/0 and 18/6 , and concluded that 24/0 is better for those who have lots of cash to spend, dont care about the cost of electricity and are eager to harvest as FAST as possible
however , 18/6 is a far better cycle as plants, like every other living organism needs a down period to recuperate, plants on 24/0 will grow slightly faster but the plants wont grow as half as fast as they did in the first 18 hours, therefore to an exstent the extra 6 hours is wasted as the extra light is used very inefficiently. go with 18/6
 
Nvr2Stond

Nvr2Stond

Well-Known Member
bobbyhopefeild said:
ive tested both 24/0 and 18/6 , and concluded that 24/0 is better for those who have lots of cash to spend, dont care about the cost of electricity and are eager to harvest as FAST as possible
however , 18/6 is a far better cycle as plants, like every other living organism needs a down period to recuperate, plants on 24/0 will grow slightly faster but the plants wont grow as half as fast as they did in the first 18 hours, therefore to an exstent the extra 6 hours is wasted as the extra light is used very inefficiently. go with 18/6
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I agree 100% here, I leave my 1000w hps on non stop and love the results.
 
Mikey Hustle

Mikey Hustle

Well-Known Member
My Kandy Kush flourishes in 24 hr light.

Although, my Sleestack, Blueberry, LA Confidential, Azorian Nightmare, and LSD dont. These strains did better with the 6 hrs of sleep.
 
ink the world

ink the world

Well-Known Member
I grow perpetual, I had 3 spaces, then got flooded out of our place. Veg room was 18/6, clone space was 24/7

I now have 2 spaces and I use the same space for my clones and vegging. the lights stay on 24 hours so, they do seem to grow a tiny bit quicker.
 
HookdOnChronics

HookdOnChronics

Well-Known Member
If you actuall compare root growth in the 24/0 light schedual and the 18/6 light schedual you will see that you have a MUCH larger root mass in the 18/6 light schedual. And everyone knows what more roots means right..... :)

I use to grow 24/0 in veg. Untill I campared the root growth of that plant to one of a plant of the same size and strain in 18/6. Just seeing the difference made up my mind for me... 18/6 ALWAYS!
 
JLH1983

JLH1983

Well-Known Member
hey all....
anybody experimented with "day" length?? ie. 20/6, or 24/6 for vegg....?

also is it the shortened daylight or extended dark period that triggers flowering?-- ive pondered like a 14/12 or 16/12 to try for flowering... cant find any research on the subject-- or possible pros/cons?
 
Gardenmaster1

Gardenmaster1

Member
JLH1983 said:
hey all....
anybody experimented with "day" length?? ie. 20/6, or 24/6 for vegg....?

also is it the shortened daylight or extended dark period that triggers flowering?-- ive pondered like a 14/12 or 16/12 to try for flowering... cant find any research on the subject-- or possible pros/cons?
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I have never tried it my self but I have heard that you can go 18/12 as the best cycle for flowering. It does not change yeild or potency, but a plant that takes 8 weeks to flower will be done in 6 weeks.

First I am not sure where you could get a timer capable of this, and second think or the poor confused grower trying to figure out when to water, and foliage feed.....
 
HookdOnChronics

HookdOnChronics

Well-Known Member
CLOSETGROWTH said:
Ive been growing for over a decade, and recently went from 24 to 18..

My roots are so much bigger now, and way more healthier foliage.

Growth rate, about the same..

Give your plants a break :)

Let em sleep! ;-)
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THIS! I did the exact same, as you can see in my earlier post, with the exact same results..... It's true and if your reading this, and your vegging under 24/0, trust me..... It is WELL worth switching to 18/6./ I didn't even realize untill I tried it!...

bob+marley said:
hahahahahahahaha
thanks HookdOnChronics for pointing that out.

i just laughed hysterically. I should really get out from behind this keyboard haha.
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Hahaha, I was cracking up to dog! lol
 
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