Temp to low???

During my 12/12 lights off time, my temp gets all the way down to 59 degrees. Is this to low? When the lights are on, my temps never get above 76 degrees.

How are the plants responding? If you're noticing a delay or retardation in growth, then you've got your answer right there.

Seamaiden, Have you seen temps that low before?

59 your fine 49 their dien

your ultimate temps are 65 at nght and 80 in the day or when lights are on ferinhite degrees

That's about perfect. During dark hours you want a 15F drop in temp from your light hours. So if your light temp is 76F then the perfect temp for dark would be 61F, and I would say that 59F is pretty damn close to 61F, just don't let it get any lower.

Lowkster said:

Seamaiden, Have you seen temps that low before?

Click to expand...

And lower, yes. I grow outdoors in the mountains.

Whats the lowest temps u have seen? Im asking stupid questions to a veteran, but Im curious.

I can't call myself a veteran. I'm currently experiencing mid-to-low 30s, and I'm bringing the last three girls (to finish up) inside. Everything else is growing indoors. I started back in early April, and my seedlings were started outside, lows were easily comparable. Those low temps pretty much shut down growth. As long as it's not a hard freeze, it basically seems to shut down growth. Temps of the root-ball makes a difference in these things, too, all my plants are potted. If you're in-ground I would expect better tolerance, though you can't do what I just did a little while ago. Your mileage may vary.