Optimal Temps?

Due to the location of my grow I am lucky enough to be able to control the temperature pretty much down to the degree now. I could and still may produce a spreadsheet of the data I have been collecting over the last two weeks. Nevertheless, the numbers are so consistent I do not think it is necessary.
On times, temperatures and humidity are 77/41, 79/37, 75/41, 76/34, 76/33, today is 77/34
Off time, temperatures and humidity are 71/66, 71/61, 71/63, 73/45, 71/52, today is 72/42
Ambient temperature in the room the cabinet is in is staying between 71-73 and right around 42-50 humidity.
Can I lower the nighttime temperature in hopes of better air exchange in the dark period?
Are these figures going to put me at risk for mold?
Of course, things are going to change just a little when I get the veg cabinet up and running as they are connected but for now, I need to get this dialed in.

I would say that for an empty room the RH is a little too high.

Once a plant gets in there this will in time increase the humidity. As long as your humidity with plants does not get above 65% then the chances of mould are reduced. It is however possible to grow plants in very high RH conditions.

If you can keep temps almost the same for day and night periods you will reduce the amount of stretch your plants try to make along with keeping lights as close as you can.


Hitting lower temps on the night time cycles will not help air exchange. ONly an adequate FAN and INTAKES (powered and passive) can help with air exchanges

Other than this i think you are golden




J

Thanks jondamon,
It seems hard to give all the information it seems without making a post about a mile long. I do have a single plant in the flowering chamber and has been in there almost 2 full weeks now; I would have to check the exact dates. The strain is a mystery to me as the plant was given to me with a bad case of stretch and lack of adequate lighting. The inadequate lighting proved to be a blessing because it had made the plant begin to show its sex, which I determined, was female from the pre-flowers.
I should add that prior to adding it to the flowering cabinet, it spent about a week in the vegging cabinet to bring it back around, although it is still has signs of curling.
I'm using a Vortex 6' controlled by C.A.P. Controllers - VSC-DNe - Variable Fan Speed Controller Day/Night. It lets you set the exact temperature for day and night cycle. It is variable speed and ramps up and down depending on how you set it, within 3, 5, or 7 degrees.
The problem is that it does not get warm enough during the dark period for the fan to kick on at all, but if I could set it say for 68 it should come on very slowly. During the day period, it the fan runs at about 1/3 of its full strength to keep the cabinet at 76. It does very well when set at 3 degrees, as it seems to only vary those few degrees during light on period.
In a few days, a 6' inline booster fan should arrive which I am using to push the hot air from the veg cabinet into the flowering cabinet, which should help produce a little heat during the flower cabinets off period thus helping kick on the fan. I have yet to have them both going as I didn't have anything to cool the veg cabinet during the off period, it stays at 76 when the light is on in the flowering cabinet and the fan is working.
There is a link to the cabinets and the second link in my sig is for the plant that was given to me. Any help is appreciated as I am looking to learn and in turn pass the knowledge that I gain on to someone else in need.

I've also read that a drop in night time temps is a good thing as it replicates nature causing the plant to produce more resin to help protect it from the temps as well as pests. Pretty sure I read that in a High Times from a month or two back. I'll see if I can dig up the article

Night time drops in temp are not a bad thing, as a decrease of 5-8F can help steer your plant generatively.

Check out some of my threads below for info on AMINO'S and CARBS, POSITIVE STRESS , BEST BUG CONTROL and TRANSPLANTING.


https://www.rollitup.org/newbie-central/393248-positive-stress-can-being-unkind.html

https://www.rollitup.org/newbie-central/370486-geek-squad-alert-carbohydrates-amino.html

https://www.rollitup.org/bugs/354439-one-best-bug-controls-i.html

https://www.rollitup.org/newbie-central/395161-how-transplant-tutorial.html




J

Thanks for the links as they were very informative and will be useful in what I hope to be years of hands on education.
I"ll throw out an update on temps in the box tonight after I have a chance to gather all the night time temps, but I think it is closer to being dialed in.