Temp too high?

I flipped to 12/12 yesterday and flipped the switch on my 2 LED panels for bloom... Temps quickly hit 90. I re-routed my exhaust to the outdoors and after my first 12 hours in my tent the temps seemed to have settled around 85... Is this too high for indica strains indoors? I keep the house around 68 and I have ordered some more flexible venting. Once it arrives I will pull a small amount of outside air into the room my tent is in. (Michigan winter air) ...

In the meantime, is 85 too hot?

That's a little too hot. Try to shorten your ducting if possible. What size inline fan are you running? I used to have temperature issues but I realized my inline fan wasn't strong enough, then I upgraded to a 740CFM 8 inch inline fan and it dropped my day time temps to the mid to high 70s.

If you are reaching temperatures this high in the winter, imagine what they'll be like in the summer.
And you say you cranked on the Bloom switch, not sure which brand you are using, but for viparspectra LEDs you should be running both the veg and Bloom switch the entire grow.

85°f is a little warm, I would definitely agree with a bigger fan.

I'm in Michigan as well and I'm using a 1000w hps, my temps shot up, needless to say. To compensate, I had to reroute my fresh air intake to come directly from outside, in, bringin my temps down to a steady 75°f. I got kind of cold at night, 53-58°f, but after I got a short interval timer, my night temps steadied out at 67°f range at night.

I think the point I'm trying to make is maybe getting a short interval timer, when you start bringing in colder air, could help your situation. what are your RH levels?

Yeah 85s higher than ideal. Its not going to be a major blow though! Most folks run a warmer air temp with LED anyhow.

Tell us more about your set up. That's a hell of a rise in temps.

What are the lights
What fan? Brand and model so I can look it up.
Photo of your set up would be nice too!

RH is being kept around 45-50%

Both veg and bloom switches in both panels are on.

I cant take a pic of my tent at the moment. Dark Time. But it is 4x2x5, soil grow, 2 small fans under my scrog and a larger fan above.

2 of these for lights... https://www.amazon.com/Yehsence-Triple-Chips-Professional-Greenhouse-Hydroponic/dp/B07FN3X6H7/ref=mp_s_a_1_3?keywords=led+grow+light&qid=1551648482&s=gateway&sr=8-3

6 inch inline fan / duct / carbon filter .. One of these ...

LordHill said:

RH is being kept around 45-50%

Both veg and bloom switches in both panels are on.

I cant take a pic of my tent at the moment. Dark Time. But it is 4x2x5, soil grow, 2 small fans under my scrog and a larger fan above.

2 of these for lights... https://www.amazon.com/Yehsence-Triple-Chips-Professional-Greenhouse-Hydroponic/dp/B07FN3X6H7/ref=mp_s_a_1_3?keywords=led+grow+light&qid=1551648482&s=gateway&sr=8-3

6 inch inline fan / duct / carbon filter .. One of these ...View attachment 4293419

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So those lights are around 260w each, 2 of them is a little much but one of them would be a bit under where I would want with those types of lights.
Is it possible to turn one of the veg switches off so you have one light full blast and the other on bloom only?
That should drop your temp a couple of degrees and put you in a good range.

85 is a bit warm but I wouldnt worry about it, coming off veg 85 is fine really, it's late flower you want it to be around 75-78.

Yes I absolutely can turn off one lights veg light, that is a great idea.

Thanks for all the info y'all.. Its always appreciated and in return I will go smoke one for ya

Having 1 light full blast, 1 light just bloom, and a PC fan intaking extra air has dropped my temp to a steady 81

I'm in Da UP of MI, I run mostly LED that I build, I don't have any experience with those "blurple" types, but I'll tell you for sure that my temps need to stay above 77f or my plants get pissed.....
I think you'll be good at 81(ish)

With my "dark period" temp being 68-70 degrees I am shooting for 78-80. I want a 10 degree variance

Take your temp meter out of the light and put somewhere shaded immediately

It is on an open spot in my scrog net. In the canapy isnt a good place?

LordHill said:

It is on an open spot in my scrog net. In the canapy isnt a good place?

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Yes, its the only place.

LordHill said:

It is on an open spot in my scrog net. In the canapy isnt a good place?

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We do not want to read direct or indirect light/radiation as per the basic mechanics of reading a true air temperature.

That light heats leaves whilst the leaf cools due to energy exchange from transpiration as nature realises water is one of the most efficient cooling systems.

You do not want to be heating your thermometer and if in other areas of the rent it is cooler then i question the validity of your readings.

One may realise the heating effects of light by simply placing your hand close to the light - feels hot right...? Now take a piece of cardboard and place that between the light and your hand.... feels cooler now right? Now were sciencing this shit.

I dont know if you meters in the wrong place and being warmed by the light but when i read sinilar threads and posted the basics of how to grow it turned out to be the case and they managed to instantly reduce temps by finding a more optimun spot for their meter.

Canopy temps are some weird methodology carried over from real world situations but we have great air extraction so logically the air at most points of the tent will be the same temperature.

Hope that helps explain thecscience and bring those temps down

As a temporary solution you could rain down some co2 on your plants!!?

That makes sense.. I will try it in different areas of the tent and see if it changed at all. I am getting great air movement from my fans. So it stands to reason that you correctly scienced the shit out of it

LordHill said:

That makes sense.. I will try it in different areas of the tent and see if it changed at all. I am getting great air movement from my fans. So it stands to reason that you correctly scienced the shit out of it

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Id suggest to those that want to grow to find exact ways to read air temps.

Mainly when peeps do this they realise the extraction dosent have to be so full bore.

We start seeing precise points we can all set our tents too and less of this 'what works for one might not work for another' and more horticultural grade environments.

None of this means you will grow great plants its just one part of growing thats easy to get right and underatand freeing you up to ponder other plant problems.

Kingrow1 said:

Take your temp meter out of the light and put somewhere shaded immediately

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Wait....should my temp probe NOT be at canopy level in the light?!

Maybe I should get a few simple thermometers and hang them around my grow tent to get a better idea of average temp and possibly find any hot spots. I have a pretty big ass oscillating fan going 24 hours. It's 18" blades move some serious air srou d on the lowest setting! Anything above low setting makes it look like a hurricane in there. Lol