Lighting Dark period temp question

MikeS3411

Aka rocksta
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i do a 20/4 light cycle when the lights are off how much of a temp swing should it be if it's to cold can it hurt my plant what's the lowest it should be ?????
 
The temp drop depends what kind of lighting you have.What are your temps with lights off?
 
I never check temp cuz I don't like to interrupt the dark period maybe I'm jus paranoid lol but I usually have a Ac running and air cooled tube with a really nice inline fan too when the dark period comes I turn the Ac way to be set at 74 depending on the temp outside tho its really easy for me to control the temp in my grow area so I jus wanted to know if my grow room is normally 77f if I jus left the Ac completely on without lowering it if it got to like 66 is that to cold what is the recommended difference between lights on and off
 
I've heard that too but then I read too that purple phenotypes need more than a 10 degree difference for them to turn purple I'll jus keep it safe and try to keep it close thanks for your help !!
 
This is exactly why I run my lights 24/0 ;)
I was gonna do 24 electricity was why I didn't and also I wasn't sure if my electrical setup was that good my first cord wasn't the right rating and melted the extension lol I had to buy a heavy duty extension cord so know I'm constantly worried about the heat from the cords
 
Once it stays above 16 C short term it should be fine but increasing humidity can be a problem where the temp drop is significant...:pass:

With my lights on I have 30-35°C at canopy and 35-45% humidity.
With my lights off I have 20-24°C and 60-70% humidity.

I run 18/6, could this be problem in flowering period? How to lower humidity, I cannot put air in because it's already hot here in summer.
 
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