lights out temps?

[tokinherper]

how low can temps be for plants when the lights are off?

 

[v35b]

don't let the temp go below 50F.

 

[Roddy]

they can go quite low, but you'll want to keep them around the mid to lower 60's, I believe, for good growth...I'm sure someone with more knowledge can better answer this for you though!

 

[Locked]

I shoot for 60-65 for my low temps....unless I have something that goes purple with cold temps...then I try for 55-60. Jmo

 

[Old_SSSC_Guy]

i know it sounds dumb to some, but "rule of thumb" logic is that your plants like temps just like humans; they like it mid 70's-80's during the day and maybe 10 degrees cooler at night.

i am a fan of driving temps cooler in off hours during flowering. the logic is to emulate mother nature and make the plants think their world is soon to end. outdoors the flowering season is triggered by shorter hours of light and cooler temps at night.