vegging

[fatsax]

who has tried both th 18/6 and 24hr veg cycle?which best ,,what diferences are there?
doesnt the 24hr stress the plants?
can u use 24hr straight from seedling?

[stinkyattic]

I have always used 24h right from seed.
I have seen no evidence that points to stress, and I am happy with my F/M ratios- always over 50%F.
Sorry I can't be more helpful- never tried 18/6.

[fatsax]

k ill turn the time up then u seem to know what u doin stinky

[BobBong]

Increasing the amount of hours the plant is getting can stress the plant. If you're going to do 24/0, do it from the start. Then decrease from there. It's a cycle plant meaning that as it ages it matures into its next cycle. Reversing that cycle can confuse the plant and depending on genetics and circumstances (like heat,nutrients,etc.) it can stress the plant to grow male flowers. Avoid increasing the hours of light and only decrease it as this will simulate the end of the season.

Hope this helps,
Bob.

[fatsax]

do u agree with that stinky?shall i leave it on 18 since tha twhat i started with or still put it up to 24hr????

[stinkyattic]

Leave it where you started. Definitely. Consistency in lighting is important to cannabis.

[fatsax]

:) cheers

[home.grower]

Increasing the amount of hours the plant is getting can stress the plant. If you're going to do 24/0, do it from the start. Then decrease from there. It's a cycle plant meaning that as it ages it matures into its next cycle. Reversing that cycle can confuse the plant and depending on genetics and circumstances (like heat,nutrients,etc.) it can stress the plant to grow male flowers. Avoid increasing the hours of light and only decrease it as this will simulate the end of the season.

Hope this helps,
Bob.

I agree. Having used the 24hour (t2.4kW-HPS) light method from the start of vegging clones for little over 1 week, as soon as I turned the lights down to 18/6 they grew very quickly and gave me many nodes and inter-nodes as a result. It may not work for everyone and running MH/HPS all day and night is not cost effective unless you are aware of what you are doing as not to waste all ones' money on the bill. I work with clones to ensure they are female, therefore unless I do something drastically wrong they shouldn't herm up. Good luck

[Weedhound]

I found the same thing home-grower. My plants seemed to do much better with a six hour dark period. I did try 24/0 but was not as pleased with the results as much as going with 18/6. That's what I'm sticking with from now on. ;)

[home.grower]

I found the same thing home-grower. My plants seemed to do much better with a six hour dark period. I did try 24/0 but was not as pleased with the results as much as going with 18/6. That's what I'm sticking with from now on. ;)

Well, plants do their chemical processes during the dark period I guess, and they also do most of their growing during the night cycle. So 24hrs of light won't display much changes until the lights are dropped. 1 week of 24 hrs of light, then dropping to 18/6 showed me the most vegetative growth as a combined method. 24hrs of light didn't show me any significant plant development untill 18/6. I reckon the plants were storing a shed load of energy up to saturation point, then 18/6 allowed them to do grow strong, fast and quick.

[WildFire.ca]

The dark period is necessary, I am too tired to explain why. Hey stinkyattic have you ever had a problem with auto flowering plants and clones?

[the image reaper]

I have tried different lighting periods ... my plants seem MUCH happier with 18/6 ... they need the dark hours ... if 24 suits you, go for it ... I will stay at 18/6 ... :smokin:

[stinkyattic]

Hey stinkyattic have you ever had a problem with auto flowering plants and clones?

I have never run an auto strain. If you are talking about cloning lowryder etc, don't bother, it's not a viable prop option for an auto strain.

[FireTheft]

18/6 is the way to go IMHO.....24hrs just makes them grow too fast....often times you'll get large leaves, rapid growth, but a weak center stalk that can't support everything.

patience is one of the most important virtues of maximizing how fast your crop grows

[WildFire.ca]

I have never run an auto strain. If you are talking about cloning lowryder etc, don't bother, it's not a viable prop option for an auto strain.
when you run the lights for 24h a day you should be making auto-flowering plants. Do you have any plants in veg over 3-4 months that you grew from seed this way? I think it's the same for clones too I'll have to read up on it.

[stinkyattic]

when you run the lights for 24h a day you should be making auto-flowering plants.
Nope, to auto-flower it HAS to have C. ruderalis (Siberian hemp) in its genes.


Do you have any plants in veg over 3-4 months that you grew from seed this way?
Yes, although they HAVE been sexed uner 12/12 and returned to veg for mothers or breeder males.


I think it's the same for clones too I'll have to read up on it.
What is the same for clones?

[horror business]

I've always used 24/0 in the past and compared to grow logs that I've seen, my plants were doing just as well if not better than those on 18/6. I've never tried 18/6 though, so I really can't compare, but I've not seen any side by side pictures of one method being better than the other. Until then, I will continue 24/0 and 12/12, although I may give 18/6 a try in order to foliar spray my plants in the dark period, which is a no-no if you're running your lights 24/0.

Peace,
:rasta:

[picilo]

I have done both, many times. 18/6 is the way to go. But what Ive started doing now is I use 24/0 when seedlings or clones are rooting. Then I switch it to 18/6 after they get about 3 sets of leaves. I have two major isues with 24/0 that made me not use it the entire veg after a few grows. I noticed that the roots seemed alot smaller and filled the 5 gal pot up less then when I had it on 18/6. Also I had a much better F/M ratio when I did not use 24/0 the entire veg. When I did 24/0 i got about 50% - 60% female, and when I did 18/6 it was more like 75% - 80% female. I may have just got lucky, but those are my observations. laterz..


picilo

[WildFire.ca]

I agree, roots mostly grow at night more roots = more food and water = more growth ie buds.
[attachment=o150388]

[stinkyattic]

I get fabulous roots under 24h.
Your root vigor is largely dependent upon soil lightness and oxygenation.
I recently did a test where I put newly-rooted clones in rapidrooters into party cups full of very light compost/perlite mix. The roots hit the sides of the cups in 2 days under 24h light. No complaints here!