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

[astronomy420a]

if there auto's 20/4 or 18/6 i prefer 20/4 for my auto's. and for indoor photo's 18/6 veg, and of course 12/12 in flowering

 

[tokaite]

FOr Super-auto, would you use 18/6?
Peace!

 

[jayp]

I like 20/4 for all my Auto's

 

[KUDO]

Iv grown Auto under 18/6 then flip to 12/12 and got monster grow,but i do all my girls are under 18/6,so me LED lights a rest, Kudo

 

[tokaite]

FOr Super-auto, would you use 18/6?
Peace!

High!
Got confirmation by breeder "STITCH", Super-Auto under artificial lights do best @ 18/6 and in week 7/8 you could drop to 14/10.
Peace!

 

[breederj]

Good info.

 

[breederj]

I've always vegged both kinds 24 7. Griever why do u have too ?

 

[Liontamer]

Another excellent thread but frustratingly open ended.
I found this thread and thought 'aha, a sticky, that will have the definitive answer'
But, alas, there is no definitive answer, only many personal preferences all with their own 'proof in the pudding'
If I have the opportunity soon I shall wait until I have 2 identical phenos at sex stage and shall completely cover one of them for 12 hours whilst leaving the other on my usual 24/0.
This should iron out a few variables while using the 2 ends of the lighting recommendations, the maximum amount and the minimum, there would be still of course be many variables and as such the results would not give a definitive answer, that would take hundreds of tests on many different strains etc but it would least give a meagre insight into the possible variations different light cycles could produce.

 

[Dominas999]

I opt for 20/4 gets alot of light but also some rest time which I feel is important, and do plants like an even number of hours light lol? Noone ever seems to go for 19/5 or 17/7?

 

[randy]

Seen a few that claim to do 19/5.