Light Cycles

[donnob]

Just out of interest... how many of you guys have your lights on through the night and off during the day? 

[TheLazyFisherman]

I do. Only because it's so cold at night right now. Lights on at 6pm and off 6am. From 6am to 6pm I have a heater fan blowing towards the intakes which is connected to a temp controller with the extraction fan always on to keep temps up.

[Naughty.Psychonaut]

Yeah, lights on at night.

[GGG]

Winter definitively lights on at night , helps with the heat at night and during the day with lights of it's ok if temps are 18-22.
Summer , I run the same otherwise to hot during the day with lights on

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[Prom]

flower is on 2200 to 1000

veg and mother go off 0200 till 0800 (18 hours on)

 

[donnob]

I also run my lights at night and I was trying to suss out if there is a correlation between the light cycles and some plants starting to show bloom a little later than others?

[ORGANinc.]

9 hours ago, Prom said:

flower is on 2200 to 1000

veg and mother go off 0200 till 0800 (18 hours on)

 

Same same 

[mantis]

 yip same lights on the night 18:00 to 6:00

summer and winter 

[GGG]

 yip same lights on the night 18:00 to 6:00
summer and winter 

Also do as you , works best for me

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[West Coast Vaper]

Veg midnight - 06.00 am off
Flower 18:00 - 06: am off

Reason being if there's a power outage during the day I can respond by moving plants outside or switch on the generator.

During the night we have shoppers looking for anything to steal especially electrical cabling out here.

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[Live Canna]

Below is my normal schedule:

Veg
20:00 ON
14:00 OFF

Flower

20:00 ON
08:00 OFF

I find this works very well for Gauteng. My grows are in the garage, so in summer, the day is very hot, and the night a bit cooler. So most of the light on time is at night to compensate for heat. And then in winter its coldest at night, so again, thats when I run the lights to provide some extra warmth.

The more ideal times would be around  18:00 and not 20:00 to leverage  more of what I am saying above, but this makes watering/feeding/tending etc. more difficult, so I adjust it slightly.

Edited September 8, 2021 by Live Canna

[Naughty.Psychonaut]

should flower not be 

20:00 ON

08:00 OFF 

I run LEDs with very little heat, but still pushes the temps up by 5°C or so depending on given situation, I live in the Boland where it goes up to 45°C in the peak of summer. If I ran my light up till 14:00 in the afternoon, veg or flower, I will be toasting my plants  

I have to try working around this, which leaves me with a no brainer. I look at the hottest time of day then work back from there, during veg you got 18hrs on and I have to avoid the hours between 11:00 and 15:00, because that's really the hottest times of the day. My options are - 

1. Lights come on at 15:00 when the day starts to cool down, is on for 18 hours and goes off at 09:00 the next morning. 

2. Lights come on at 17:00 and stays on till 11:00 just before the day really heats up. 

For the plants option 1 will mean that their hottest time of day will be when the lights just come on, option two will mean that their hottest time of day will be at the end of their light cycle, which is closer to how it is in nature and this is why I went with option 2.