Rebardude229
Member
I have a grow tent and the only space I have for it is in the garage. It gets really cold in there will that be a problem
Grow tent temp question?
- Thread starter Rebardude229
- Start date
TreeFiddy350
Well-Known Member
I would consider 60 deg F would be really cold, so it depends.
what kind ofgrow light are you going to use?
TreeFiddy350
Well-Known Member
And even when lights go off, I don’t want my temps going below 68
GreenLogician
Well-Known Member
Get a min/max digital thermometer, which will tell you the hot and cold extremes it got to throughout the night (since you last pressed the button).
Get an HID instead of an LED, to generate more heat.
Get an exhaust fan with a dimmer, or a dimmer for the exhaust fan you have.
Set your 'night' cycle to be during the day, so you can make use of the HID's heat during the cold nights.
Tweak your exhaust's dimmer until the min/max reports acceptable extremes.
If something like vegging on 24/0 makes you need your exhaust on high in the day but low at night, to automate it you could try getting a second exhaust fan (if your tent as a second port) and putting it on a timer, so that it only runs in the day. Or if you are going to do it manually, set a repeating alarm on your phone
Get an HID instead of an LED, to generate more heat.
Get an exhaust fan with a dimmer, or a dimmer for the exhaust fan you have.
Set your 'night' cycle to be during the day, so you can make use of the HID's heat during the cold nights.
Tweak your exhaust's dimmer until the min/max reports acceptable extremes.
If something like vegging on 24/0 makes you need your exhaust on high in the day but low at night, to automate it you could try getting a second exhaust fan (if your tent as a second port) and putting it on a timer, so that it only runs in the day. Or if you are going to do it manually, set a repeating alarm on your phone
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twalte
Well-Known Member
I was thinking of using something like this.....where the exhaust fan is on the “cool” setting and a heater is on the heat setting. Not sure If that would work.
Inkbird ITC-308 Digital Temperature Controller 2-Stage Outlet Thermostat Heating and Cooling Mode Carboy Homebrew Fermenter Greenhouse Terrarium 110V 10A https://www.amazon.com/dp/B01HXM5UAC/ref=cm_sw_r_cp_tai_f0eZDbRMSSZ4T
Inkbird ITC-308 Digital Temperature Controller 2-Stage Outlet Thermostat Heating and Cooling Mode Carboy Homebrew Fermenter Greenhouse Terrarium 110V 10A https://www.amazon.com/dp/B01HXM5UAC/ref=cm_sw_r_cp_tai_f0eZDbRMSSZ4T
GreenLogician
Well-Known Member
twalte, those devices try to maximize the time spent above the minimum temperature (and below the maximum). With the exhaust fan's on time being something the tech is trying to minimize, might that setup cause a very big reduction in the amount of fresh air the tent gets?
twalte
Well-Known Member
That is my main concern and the reason that I have not ordered one yet. The tent would get no fresh air during lights out.
There are alternate lighting schedules that can be used in veg mode that would minimize that issue (6on, 2 off repeating).
I’m currently have a 15 degree swing in temps.
GreenLogician
Well-Known Member
I'd use that setup if I were running two exhaust fans though, keeping one going constantly and having one of those thermostats control my other 
... We should also check if starting and stopping instead of running constantly affects fan life! I have expensive exhaust fans.
... We should also check if starting and stopping instead of running constantly affects fan life! I have expensive exhaust fans.
Rebardude229
Member
Thanks everybody for the help I'm new here and I love this place
Moflow
Well-Known Member
A few more tips.
Insulation boards on the floor, tent on top of that and a heatmat to keep the soil warm.
Insulation on roof and sides.
Fan above light blowng warm air downwards.
Extract air from bottom of tent. - I've still gotta do that.
Works for me.
Merlin1147
Well-Known Member
To see what is really happening with temps and Rh over time consider getting a wireless temp RH data logger. I use SensorPush, Inkbird makes one too. It graphs real time temp and Rh to any mobile device.
