Lighting What's the best lighting cycle for autos - 24/0, 20/4 or 18/6

[bmw626]

I'm currently doing 19 hours on / 5 hours off. No particular reason why, just thought I'd use the half way point between the 20/4 and 18/6.

 

[RabbitFighter]

Just my 2¢. Everybody has their own opinions and choices to make. Try different things and find one you like. I will be trying 20/4 my next grow. However I will always start my plants 24/0 until they show sex.

Hi Truu,

Right or wrong this is what I did too, my thinking is that the heat from the lights 24/0 would keep the soil temperature consistently warm for maximum root development, once they showed sex and began flowering my concentration moved into bud development and the switch to 20/4 was made. I'm just starting out so don't take my word, but it made sense in my brain.

RF

 

[DubV]

I run 20/4 for first 6 weeks of veg and then switch to 18/6 for flower. I have seen a moderate increase in trich production when the autos have a longer dark period. I am about to test 12/12 to see how much yield is effected by the 10 strains I am running now as comparison. I am doing this to run some photos at the same time but makes for a good side by side comparison on yields with specific strains at 12/12.

 

[stocious]

im running 24/0 for my first grow, is there a place on this crazy world of ours with 24hrs of light and any stage during the year, call me dumb but i think there is, if so, and rudarilis grew there, would that not be the perfect one to use!! using my common sense here i have nothing to back up anything ive just said so go easy on me

 

[stocious]

i was really looking forward to finding out about that.. oh well

 

[lostboy]

There is a place here on earth with 24hrs of light but I don't think much would grow there.
They are called the artic and antartic lol
I'm only on my first grow: 5 lr#2 and 3 pineapple haze
and I'm on 24/0. Seems to be working well for me.

peace all

 

[Dr.Autoflower]

definetly 20/4. Ive noticed big jumps in grow when they get there 4 hours of dark, which is what you want, as big of a plant you can get befor it fully goes into bud

 

[loud pipes]

I think it might vary according to variety. I'm doing a Maxi Gom grow right now. I'm pretty much convinced that these plants did not like 24/0. When I switched to 20/4 things picked up immensly. I might try 18/6 next time I grow this strain. Just my thoughts

 

[dreday317]

Big o lady

I run 20/4 all the way through, No changing light cycle

Dinafem Critical + Automatic day 36 around 22 inchs!!!

 

[RabbitFighter]

I know that I voted 20/4 and that is what I used for my first grow, but I'm experimenting with 24/0 until vertical growth has ended then switch over to 20/4 for flowering. Since I'm only growing one plant at a time I want it to have the benefit of 24 hours of light during the veg cycle.