Small grow area temp question

I have a small 8 SFT. x 6 ft high grow room. When my house ac runs, cooling the basement, grow room temp sits at 75F @ 27% RH. with the ac not running the temps rise to 80F @ 39% RH. This in in soil. Under 390 actual watt CFL @6500K, about 6" off the seedlings. Thermometer is sitting on the table next to the seedlings. I have a small fan on the basment floor under the table blowing for air movement. Floor air temp is 67F.

Are these acceptable temps?

ps will start a grow journal at 4 weeks. 2 Nirvana White Widow Fem, and 1 Dinafem Moby Dick Auto.

yeah that's great temps man, 80 is juuuuust a bit high maybe but nothing terrible. I have 2 plants flowering under cfls right now and I'm at around 93 degrees at my canopy. my temps are too high though, 80 would be great for me.

if im reading my thermometer right its about 6-7 inches to the left of my plant and its 86 degrees, im wondering since i run a cold ac in my room outside of my grow closet if i should keep the door cracked and let some of the cold air flow in, in attempt to cool it down.

MizzMellow said:

if im reading my thermometer right its about 6-7 inches to the left of my plant and its 86 degrees, im wondering since i run a cold ac in my room outside of my grow closet if i should keep the door cracked and let some of the cold air flow in, in attempt to cool it down.

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That's what I do in the summer months when it gets too hot. I just bought a metal tube, similar to the tubes u find inserted into the back of a dryer, and I just run that into my grow. My AC air comes out from the floor but it's only about two feet away; but it definitely helps gets those temps way down...Seeds do best in a bit of a warmer climate. High 70's, low 80's...Mid and low 80's can get u through veg fine but when flowering comes around it's time to get those temps around low to mid 70's. Change of light and colder air tells the plant the seasons are changing...Last two weeks of flower it's best to drop temps to the 60's during the dark hours...Humidity for veg should be 50-60% and for flower it should be around 30-40%. To get higher humidity for veg foliar spray more often or get humidifier. To get humidity down for flower without buying a dehumidifier (expensive) get some damprid hanging desiccants at walmart, 3 for $9. Usually drops my grow humidity about 10% using 2 of the 3 bags. But your grow room has to be somewhat closed in or small for them to work

Measure temps at different levels, usually you will get a higher reading at the top since heat rises. This can be offset by an extractor fan in the grow room and a fan elsewhere to move the air. Temps will drop 10 degrees. Then you will have to think about leaving the fans on when your lights are on. I just monitor my temps closely, at night I get a nice 79 degrees while they sleep. Depends on your setup but, get the tools you need to monitor and control your temps.