What is your average temperature when your lights are on? (VOTE THIS POLL!!)

Hey guys! Put some feed back!

community said:

Ok, this is a repost from yesterday, I made a mistake in the last poll.

I am trying to research and see what is the average temperature you guys grow at. So take a second and vote on this poll: What is your average temperature when your lights are on?

I know many of grow spaces are poorly vented and this can effect yields.

So how hot is too hot? At what temperature do you guys notice a decrease in yields?

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The general rule is 70-80 during light cycles and 60-70 during dark cycles. If you have CO2 supplementation then 80-90 is fine for the light cycle. I don't have CO2 and I'm using CFLs and I'm struggling to keep my temps below 80F.

I've read from several sources that 85+F is the critical upper bound for effecting yield without CO2

85-90 here until i get my digital ballast and cooltube fully functioning. can't wait to get the temps near 80

about 76-82 depending on how warm the day is

SCI said:

about 76-82 depending on how warm the day is

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flower room one 1000wtt hps 80 to 87 degress. and has been as high as 102 a few times.

75 and my outside tem is normally 85 during the day yowser

I got my 1000 watter with air cooled hood and nights its around 79 to 80 and during the day it can hit 83 to 84. Which I feel is fine since the damn light is so big and puts out hella light for my babies.

20-27C is ideal, which is basically in between 70 and 80F

i voted 85-90 but it might be more like a 100 sometimes but i cant really tell with out a thermometer

70-75f, 45-50rh lights on
65-70, 45-50rh lights off

i haven't experienced yeild loss because i don't have temps in the 85-90 range...

if I was rocking my CO2 like I should be (to lazy o set up my halos and turn the tank on if you believe that!) temps can be a bit higher (75-80f)...

I have 3 temp/hygrometers per room, each in different places so I can see the whole room is happy/.

MediMaryUser said:

i voted 85-90 but it might be more like a 100 sometimes but i cant really tell with out a thermometer

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Damn bro I would get a thermometer if I were u. I know when I got mine it helped alot. Some times temps won't feel hot but then i check my meter and the shit says 85 or 90.

Thank you guys for your responses! Its good to hear that most people hit 75-80.

I voted 80 - 85, but it varies with season/setup. I like it best @ just under 80* F and just under 60% RH.

Ok heres my situation,
I have one 600w MH bulb for Veg stage and HPS for flowering, both create C02 emmisons when on. Now since my reflector is a Euro inline cooler it has a clear sheet of flexiglas(i think) between light and Plant, so i can get the light close, with 2 inline holes for a cooler fan or tubing either way.
Im putting a fan on one side and haveing it vent out all the heat and Co2, then i take a small little house fan and blow it back at plant with plant on a circular rotator. so it absorbs the Co2 but doesnt get much heat since that is reduced from the small house fan....

Is this Effective??

holy shit above 90 thats insane.

Same here, but I find its better to cool the cab and the intake for the fan is hook through the euro 6. Bring in fresh air to the cab, hot air brought through the euro 6, in the fan, out the fan, into a carbon filter.

My room temp is in the low 70's usually 72-74. Canopy temp is about 80-82( all these are F). Can anyone tell me what temps are ideal?

BTW me night(lites off) temp is around 65.