Help! Why is my tent heating up so bad

igrowpot87

Active Member
my windows are also criss cross crom each other so it makes some kinda negative postive pressure thing and controlled by a switch gotem at home depot for 30 bones bathroom exhaust fans. power air or something they are seeming to work great for me i have a 10x10
 

TreeFarmerCharlie

Well-Known Member
So raise up the oscillating fan so it's pointed at the LED drivers?
No, don't bother with this, because it will make no difference, and could actually make it hotter at canopy level. You want the heat to rise (which it does naturally) so it can be extracted by your fan.
 

SpawnOfVader

Well-Known Member
So someone had mentioned not measuring the temp in direct light. Don't you want to know the temp at the plant's level?
 

TreeFarmerCharlie

Well-Known Member
So someone had mentioned not measuring the temp in direct light. Don't you want to know the temp at the plant's level?
I measure at canopy level but you want to use a small sensor that isn't catching a ton of photons. The best way to measure the temp, though, is to measure the leaf temps at the top of the canopy with an IR thermometer.
 

SpawnOfVader

Well-Known Member
Those are horrible for tent exhausts. They have really low CFM and can't deal with any flow restrictions (like carbon filters). Those are meant to help remove fart smells from bathrooms, not to help control the environment of a tent.
Agreed, I actually tried one of those as my first fan and it didn't do jack. I feel like the current fan is adequate since it is double the power of my last fan and it's not making much difference- doesn't seem to be the amount of flow that's the problem. Looking into venting outside and moving the intake to the AC vent for the room.

FYI current fan is loud AF but the amount of air coming out the exhaust is ridiculous.

 

igrowpot87

Active Member
They work surprisingly well for me, Im not running a tent tho, I made my own room they are 250 CFM haven't hooked up a carbon filter yet either in about to find out. If it don't I'll just have 2 in take fans buy a good one for the one going out
 

SpawnOfVader

Well-Known Member
I measure at canopy level but you want to use a small sensor that isn't catching a ton of photons. The best way to measure the temp, though, is to measure the leaf temps at the top of the canopy with an IR thermometer.
So if I'm not doing an IR thermometer I should probably get something with a probe I can put at canopy level.
 

TreeFarmerCharlie

Well-Known Member
They work surprisingly well for me, Im not running a tent tho, I made my own room they are 250 CFM haven't hooked up a carbon filter yet either in about to find out. If it don't I'll just have 2 in take fans buy a good one for the one going out
How long have you been growing for? You keep saying that things "work good for me" but I have a feeling you just don't understand what "good" is yet. We've all been in the same spot as you at one point and you are making the same mistakes we all have. The sooner you realize this the sooner you will stop wasting your hard earned money on equipment that just doesn't do the job.
 

SpawnOfVader

Well-Known Member
How long have you been growing for? You keep saying that things "work good for me" but I have a feeling you just don't understand what "good" is yet. We've all been in the same spot as you at one point and you are making the same mistakes we all have. The sooner you realize this the sooner you will stop wasting your hard earned money on equipment that just doesn't do the job.
Indoor cannabis? 2nd grow which is why I'm on here. Plants in general? I've been running a 50 acre biodynamic farm for close to 20 years.
 

TreeFarmerCharlie

Well-Known Member
So if I'm not doing an IR thermometer I should probably get something with a probe I can put at canopy level.
Yup, you can see how I have mine hanging in this picture. There are actually two sensors in mine...the larger white one is for my control system, so I can monitor the temp and RH and control my humidifiers with those readings. The thin metallic sensor is from my AC Infinity T6. The white sensor has a lot more surface area and it consistently reads a few degrees warmer than the other sensor.
sGDazoH.jpg
 

coreywebster

Well-Known Member
So someone had mentioned not measuring the temp in direct light. Don't you want to know the temp at the plant's level?
You want to measure air temp. Not the radiant heat the light puts out.

You just need to shade the thermometer with white card or in a well mixed space measure above the light line.

But an IR gun and leaf temp is a better way these days. Both are important. Radiant heat not so much.
 

SpawnOfVader

Well-Known Member
Yup, you can see how I have mine hanging in this picture. There are actually two sensors in mine...the larger white one is for my control system, so I can monitor the temp and RH and control my humidifiers with those readings. The thin metallic sensor is from my AC Infinity T6. The white sensor has a lot more surface area and it consistently reads a few degrees warmer than the other sensor.
How quiet are those AC infinity fans? I was looking at them but didn't know if it was worth the extra $$. The one I have is putting out about 55db
 
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