low night time temps indoors

I flower in a basement in a northern climate. Right now my night time temps are getting into the low 50's and day time around 70 F. What would be the minimum night time temp before I need to be concerned. Right now I like the colder temps its giving my plants some nice colors.

Those temps should be just fine for your ladies.

basically lower temps will turn your plants purplish. thats about it. if you dont want them to turn that color then temp shouldnt be no lower than 60-65 at night.

what stage of growth are you in. you will get a better veg in warmer climates. as for flower, a little cold towards the end will help to bring out the purple in the genetics if there is any. but too much cold during the majority of flower will decrease your yields. I would recomend not air cooling your lights and take the glass off of your reflectors.

60f.........................

I run 70's in veg and as soon as i flower they go down stairs in the cold. I was kinda worried may hot to cold would cause some kind of mold