which is better? 24/0 or 18/6 lights
I have tried to 24/0 method and have had great success. The plant was very stretchy.
My electric bill went way up. I am running 15 100 watt cfls.
I then went to my local hydroponics shop and purchased a product called Liquid light
h**p://www.dutchmaster.com.au/?language=english&page=product&product=LIQUID_LIGH T
I followed the directions to the letter on a 18/6 schedule and its better then a 24/0 schedule!
I will stand on liquid light. I will never grow tomatoes without it again.
Tomatoes are DENSE,THICK, And OOZING with flavor! ;)
It runs about 60 bucks for a liter. expensive? maybe! But 1 table spoon per gallon of water and folar spray 2 times a week. It gets very cheap and well worth the effort and extra cost!
Hope I helped.
which is better? 24/0 or 18/6 lights
my ladies look very tired after a long day, droopy leves and such, but at first light they reach and look happy, so i use a dark period. and clone in 24-0 but thats for temp stabilization
my lighting periods are different per strains sativas i try to run 15-16 hours light for veg and 10 -11 hours light for bloom on some strains it changes the pheno almost to where you cant tell what it is, more sativa-y
indicas get the 18-12 deal veg flr
which is better? 24/0 or 18/6 lights
Quote:
Originally Posted by oldmac
This is why the ambient CO2 levels are higher at night then during ther day.
Hot damn.
By theory, dark cycle during the daylight hours and light cycle during night hours would be better.The plants would make use of the higher CO2 levels in the night time with the lights ON. Fresh cool air from the outside night time might even add to the rich oily stank.
It's very late, and I'm :stoned:
begood
be
which is better? 24/0 or 18/6 lights
I couldn't choose, so I went in the middle, using a 20/4 cycle lol.
which is better? 24/0 or 18/6 lights
:DI just come across this thread that actually has some figures on the difference in root mass.
http://boards.cannabis.com/grow-faqs...ut-lights.html
here's a quote: " Light Cycles
The dark cycle is very important to plants. Respiration (this is when plants are making energy from sugar to oxygen) Continues in dark but at a much slower pace, almost independent of available oxygen because the leaves are not making oxygen in the dark.
In the dark there is a shift from leaf production to root production as the leaves transfer excess energy down to the branches and roots. Therefore, some dark time allows for better root structures. The "Experimental Root Growth 10 Days After Cutting" graph on page 33 shows that giving plants a 24-hour light cycle is not the way to supercharge growth"
This is from "How to supercharge your garden" With the graph on page 33 this follows...
"Light period for cuttings
Plants have a free running internal bio-rhythm of 21-27 hours. In this rhythm, they need dark time. Cuttings have a built in daily rhythm (age also) that they inherit from their parent. Cuttings will root better with a 6 hours to 8 hour dark period because this is the main time when leaves and the stems transfer energy down to the root zone for storage and growth."
The chart has hours of light per day on the bottom, and length of roots in millimeters.
-@ 4hours of light the roots after ten days were only 22mm long
-@ 8 hours of light after 10 days the roots were 25 mm long
-@12 hours of light we shoot up to 40mm long
-@16 hours it peaks at 50mm
-@20 hours it drops down to 37mm
-@ 24 hours it drops down to 29mm
There is also a shit load of info regarding root to yield ratio vs veg to yield ratio, and draws the conclusion that at the end of the experiments the root to yield ratio was higher....."
The only thing that's missing is the 18/6, but I think the evidence is there for the dark period. If it works that good on clones, I'm sure it's better for vegging plants. I went 24/0 this time and everything was fine, but my next grow (and especially for my clones), I'm gonna go 18/6.
which is better? 24/0 or 18/6 lights
Quote:
Originally Posted by fluid69
:DI just come across this thread that actually has some figures on the difference in root mass.
http://boards.cannabis.com/grow-faqs...ut-lights.html
here's a quote: [I]" Light Cycles
The dark cycle is very important to plants. Respiration (this is when plants are making energy from sugar to oxygen) Continues in dark but at a much slower pace, almost independent of available oxygen because the leaves are not making oxygen in the dark.
Really did not want to go down this path...again but I can't help myself, I need to comment.
This first quote is wrong scientifically: Respiration is REVERSED during the dark period. The plant STOPS taking in CO2 and giving off Oxygen (during the photoperiod regardless of length) and takes in Oxygen and gives off CO2 during the dark period. All C3 plants do this. And "sugar to oxygen" oh please dear God spare me! Read a horticultural textbook or take a class in school.
(directed at original post, not you fluid69)
Anything stated as a fact after that is useless BS.
I have been doing "asexual propagation via cuttings" (clonning is actually micro-propagation or tissue culture) for a long time and my personal observations differ a bunch from what's reported here.
Photoperiod and amount of dark period is a matter of what works best for an individual, the strain they are working with and enviromental considerations.
No one photo period is "BEST" for all situations. I use 18/6 for my mom's in one grow and 24/0 (just changed to 20/4) in another.
which is better? 24/0 or 18/6 lights
Quote:
Originally Posted by oldmac
Photoperiod and amount of dark period is a matter of what works best for an individual, the strain they are working with and enviromental considerations.
I was thinking that the other day, no matter what light period you grow on your plants will all act differently, some for the better and some for the worse. Like growing hybrids, some phenos come out better than others in a particular strain. So saying root mass grew better on one plant to another like that is hard to relate considering each cutting is going to respond differently to root growth size.
Another thing I was thinking of is, they say put cuttings under fluorescent 24/0 for first 10-14 days to establish better rots (Jorge Cervantes recommends that also in his DVD I think) . If that is the case, then that just blew away the theory that the light cycle at 18/6 is better than 24/0.
which is better? 24/0 or 18/6 lights
It's time to make this thread a 'sticky'...:thumbsup:...is there a MOD in the house?
which is better? 24/0 or 18/6 lights
Hey Dutch,
Before we sticky it, it should be noted that while roots are in the "dark" all the time, they do not grow during the dark period, only during the photoperiod.
As Italiano715 points out, Cervantes and other expert authors on mj cultivation, recommend 24/0 of floro, for starting cuttings. I go one step further and use actinic white for the first few days then the 6000k floros.
Very blue light stimulates the hormones associated with root growth. This could also be accomplished with LEDs with a high blue to red ratio, or even all blue. This stimulation can only take place during a photoperiod.
And I get some pleasure from seeing the light bulb go on above some peoples heads when they read some basic information, and see how they can use it to thier advantage.
Congrats BeFree, I think you just saw the light.
which is better? 24/0 or 18/6 lights
Since StinkyAttic left...we are like a ship without a rudder in the grow forums...:(
Stinky, Zandor, latewood, or del...please come back...we are sinking fast. We are a ship without a Captain...the crew is fine, but we need a leader...:thumbsup: