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

[Autoflower420]

I have a massive scrog in the middle and 6 BlackBerry Kush autos.
Because I needed to flip my scrog so the blackberries started on 20/4 for 4 weeks then dropped to 12 n 12 they seem no smaller than any of the other 4 times I've done them on 20.4 the thc content already is unreal they so frosty

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[Jamie]

I'm worried if I do 20/4 in them 4 hours my tent will go way below 21.. Dont want a heater in there. Whats other people doing now it's freezing out? Any help would be appreciated

 

[hardgrow]

i do lights out after first week or 2 for veg under 24/0 then turn of lights from 12:00 - 16:00 its the hottest hours of day even winter. it helps by some degree.

 

[The Elvis]

i do lights out after first week or 2 for veg under 24/0 then turn of lights from 12:00 - 16:00 its the hottest hours of day even winter. it helps by some degree.

I do the same.. but I stay at 18 6 .. makes my equipment last longer.. 24 0 will make stuff burn out quicker..

 

[thetreeman]

imo its easiest to keep temps stable running 24/7 but I need the heat, if I had too much heat I might shut them down during the 'warmest' hours of the day. I wouldnt go less than 16 on tho with autos. The longer you run them, the less light you can get by with imo and still get good results. No reason to run 40w/sq if you are running 24/7, you likely wont see a lot of benefit or running half that intensity, but if you were running 12/12 the extra intensity would more likely be needed to get good results.

 

[DABaracuss]

imo its easiest to keep temps stable running 24/7 but I need the heat, if I had too much heat I might shut them down during the 'warmest' hours of the day. I wouldnt go less than 16 on tho with autos. The longer you run them, the less light you can get by with imo and still get good results. No reason to run 40w/sq if you are running 24/7, you likely wont see a lot of benefit or running half that intensity, but if you were running 12/12 the extra intensity would more likely be needed to get good results.

I do 18/6 and just use a heater..a little cold can sometime bring out ones that have color.

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[CoviklaFlaire]

Current setup is 22/2

 

[Jamie]

Current setup is 22/2

Yeah that's what I went with too, gets down to 19-20 degrees so not too bad

 

[CoviklaFlaire]

Yeah that's what I went with too, gets down to 19-20 degrees so not too bad

I got same problem,light off and my temps go down under 20c. And Me dumbass started photoP. grow.. Idiot!

 

[Jamie]

I got same problem,light off and my temps go down under 20c. And Me dumbass started photoP. grow.. Idiot!

Best thing you can do is get one of them little oil radiators with a thermostat, set it to 21/22. That's what I was going to do until I realised could run autos 22/2