Temperature is too HIGH!

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Cre5cendo

Member
Hey everybody, I am a newbie to set up a grow tent.
Recently the air temperature of my tent raised to a really high level, coz outside temp is above 35C (about 95F)
Air in my tent is 34-36C　with humidity of 58%. Even that didn't cause bad things happen to my plants, I think maybe I should do something to help.
So I put a bottle of ice bags into the tent. That helps.
I just wonder if not those ice bags, what could I do to help them?
Upgrade my fans? My tent is 80*80*160 size(2.6*2.6*5), my fan is about 120cfm. I think the fan is strong enough.
 
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Lance541

Lance541

Member
Recommend an a/c if you can afford it. If you find yourself sticking to the ice trick. Try dry ice. Last longer then normal ice.
 
SouthCross

SouthCross

Well-Known Member
Stick an ultrasonic humidifier by the intake. It's better if the tent screen is covered by some 3M reusable AC filter.

The affect you're creating is a miniature swamp cooler. The water off the cool mist humidifier cools the incoming air. Depending on ventilation, it can drop temps 3-5°f. Plus it's cheap.
 
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Cre5cendo

Member
thx for you guys
new update: my temperature is exactly 40c over night.I dont know what to do now AC is not affordable. temp is always 5 degree higher than the air:<
 
whitebb2727

whitebb2727

Well-Known Member
Cre5cendo said:
Hey everybody, I am a newbie to set up a grow tent.
Recently the air temperature of my tent raised to a really high level, coz outside temp is above 35C (about 95F)
Air in my tent is 34-36C　with humidity of 58%. Even that didn't cause bad things happen to my plants, I think maybe I should do something to help.
So I put a bottle of ice bags into the tent. That helps.
I just wonder if not those ice bags, what could I do to help them?
Upgrade my fans? My tent is 80*80*160 size(2.6*2.6*5), my fan is about 120cfm. I think the fan is strong enough.
Click to expand...
Exhaust the tent outside of the house.
 
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BRANDON77

Well-Known Member
Lost 300 seedlings to heat .....then electrician installed a fan backwards in bloom room and it blew hot air into the bloom room for a week while we were on vacation (automated watering etc)....lost all but 23 plants in bloom room.....fuckin heat!!!!!!!!
 
Diskokobaja

Diskokobaja

Well-Known Member
Cre5cendo said:
thx for you guys
new update: my temperature is exactly 40c over night.I dont know what to do now AC is not affordable. temp is always 5 degree higher than the air:<
Click to expand...

Dude I would give up then.. I have 30-33c in my tent..., And girls are heavy suffering from heat stress..With fckin mobile ac...(don't buy that shit)..
If you cant lower temp under 35c I dont know..
@Lucky Luke great idea but You have to be around whole time, and have always BiG brick of ice with you...That brings new problems..do you have space for cooling such a big brick of ice?
 
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JDMase

Well-Known Member
You're not going to cool temps lower than the room without an ac unless you can vent cold air in from elsewhere. Those are the two options I think.
 
BobCajun

BobCajun

Well-Known Member
First, congratulations on being able to stay alive in those temps with no AC. Second, cut a hole in the top of the tent the same size as the light fixture and mount it so the top is outside the tent. Having the heat sinks inside the tent is the whole problem. Very little heat comes from the bottom of an LED fixture. You might need to strengthen the top of the tent so it can support the fixture, I just used cardboard myself. You might only need a few metal channels or tubes going across the top, or even wood. I used the channels they sell for shelving supports and put the cardboard on top of those. It was this type of strip from this page http://www.homedepot.com/b/Storage-Organization-Shelves-Shelf-Brackets/N-5yc1vZc89k

 
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Blue brother

Blue brother

Well-Known Member
when outside air temps are too high you have no choice but to change your air source to a cooler place or get an ac, ur temp will never drop below the temp of you're intake. Stop thinking about ur lights its more a case of where u live . Get ac
 
BobCajun

BobCajun

Well-Known Member
The swamp cooler thing would probably also help. The more surface area to evaporate water from the more cooling. You need blanket material, polyester probably, the kind that's like felt.
 
ThcGuy

ThcGuy

Well-Known Member
Can you move the tent to a basement? Quite often basements are cooler, even in a hot house. If you can move it, vent the hot air directly outside. Best bet though is an AC as everyone has mentioned.
 
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BRANDON77

Well-Known Member
BobCajun said:
First, congratulations on being able to stay alive in those temps with no AC. Second, cut a hole in the top of the tent the same size as the light fixture and mount it so the top is outside the tent. Having the heat sinks inside the tent is the whole problem. Very little heat comes from the bottom of an LED fixture. You might need to strengthen the top of the tent so it can support the fixture, I just used cardboard myself. You might only need a few metal channels or tubes going across the top, or even wood. I used the channels they sell for shelving supports and put the cardboard on top of those. It was this type of strip from this page http://www.homedepot.com/b/Storage-Organization-Shelves-Shelf-Brackets/N-5yc1vZc89k

Click to expand...
Cheers for great advice.
 
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