room temperatures

i was wondering what the lowest temperature is to grow a healthy crop indoors?? is 68f too low with the lights on ???? and 60 with lights off???? any advice is apreciated!!!

With my jockhorrors 60F is to low for em' at lights off. I am not 100% sure but I have gathered from reading that it depends on the strain. But my Rosenthal giude says 70F with lights on is idea.

ok, thanks for the advice- iv read about it and it says you can go as low as 60 with lights off but its ideal to keep temps 75f lights on and 65 lights off, its just hard to get them stabalized- any sugestions to keep the room a slight bit warmer, its a walk in closset? im using a fan cooled 400 watt hps and when i turn the fan off it goes way too high!! is the any cheap to run heaters about?? iv heard of some type of cool tube thing??

Sounds alright.

What range should I maintain for my growroom humidity and temperature?

A humidity and temperature gauge are essential in any growroom. Daytime conditions should be 70-80 degrees without co2, 80-90 degrees with co2 until the last two weeks when daytime temps should be kept between 70-80 and co2 can be reduced to adjust for the lower metabolism. Night temperatures should be kept above 60 degrees to prevent stress. It is preferrable during flowering to have a night temperature drop of 10-20 degrees to stimulate flowering hormones and reduce stem elongation.

I find that low humidity causes stress on plants. I recommend 50-60% humidity until the final 2 weeks of flowering. At this point, the humidity should be lowered as much as possible to encourage the plant to seal and protect itself with additional resin. (I am able to get the humidity to go as low as 31%) I have been able to frost things up considerably this way. The higher humidity levels prior to final ripening reduce salt levels within the plant tissue and encourage healthy, more lush growth.
Added on: Tuesday, May 1, 2007 Viewed: 10355 times

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this is what they give in the grow FAQ..

Hey blue what is the ambient temp outside the room? Increasing the ambient temp with make the walls warmer and in turn increase the inside grow room temp. But in all honesty it sounds like your golden just try and see but my two cents is your good.

thanks for all the advice guys, im goin to raise the temps with a small heater and see what happens- respect peeps