Drop temperature in grow tent

[Amazingly_Baked]

Hello.Me and my husband are new to the growing scene and have some questions. We recently set up our 48x24x60 tent with (2) genesis fans, ducts and carbon filter. It gets very hot in the room the tent is in bc no ventilation comes in , just has a window in it. The temp gets to about 95 in the tent with both fans on. What can I do to drop the tempt and raise the humidity ?

Also the LED light im using is 600W

 

[NEW ENGLAND]

Hello.Me and my husband are new to the growing scene and have some questions. We recently set up our 48x24x60 tent with (2) genesis fans, ducts and carbon filter. It gets very hot in the room the tent is in bc no ventilation comes in , just has a window in it. The temp gets to about 95 in the tent with both fans on. What can I do to drop the tempt and raise the humidity ?

Also the LED light im using is 600W

I'm sure someone with more experience with tent growing will chime in,but it seems you need to either have an ac in the window of the room the tent is in,or if/when outside temps allow you to run an intake and exhaust through that window.

 

[tobedetermined]

Unless you can drop the ambient temp in the room the tent is in, the only solution would be a portable AC unit.

To add humidity, you can add a small cheap humidifier or do it the poor man's way by hanging wet towels in the tent. You can also put a bowl of water in the tent as well.

 

[Douglas.Curtis]

Window banger a/c, as suggested. At 600w you'll only need a 1500btu unit. Look for ones which keep their settings after a power outage, so they come back on at the right temp on their own. Portable a/c is an option, but they're more expensive and less effective for the same rating.

Welcome to ICMag, and the wild, wild, world of cannabis cultivation.

 

[Leaflet]

(2) genesis fans
Also the LED light im using is 600W

You might want to clarify the comment about the fans. Genesis makes lots of fans that just move air around. You want a fan that will exhaust air from the tent and - if needed, a supplemental fan to push air in.

You'll also want to ensure that your exhaust is mounted up high and your inlet is down low on the opposite side of the tent.

And just a random thing about the light - many new growers purchase lights from Amazon that aren't actually the wattage they expect. You may be able to look at the label on the light to see the true wattage. If not, you can tell us the make and model and someone should be able to look it up.

 

[Ace Rothstein]

In addition to the great suggestions, I too am in the same hot conditions. I have a similar area 2 x 4 foot. This is my 12th Summer and what I have learned to accept is I can't grow good bud in the Summer months. My indoor season is from mid September through the end of June. The best months being the coldest months. It is too costly for me to run AC in the grow. Make the best use of space during cool months 4 good grow cycles per year. Just have clones ready to go after each harvest. Also do outdoor from seed starting mid May for October harvest. Outdoor Temps in the lo to mid 90s don't seem to have the same negative effects.

 

[Ace Rothstein]

You might want to clarify the comment about the fans. Genesis makes lots of fans that just move air around. You want a fan that will exhaust air from the tent and - if needed, a supplemental fan to push air in.

You'll also want to ensure that your exhaust is mounted up high and your inlet is down low on the opposite side of the tent.

And just a random thing about the light - many new growers purchase lights from Amazon that aren't actually the wattage they expect. You may be able to look at the label on the light to see the true wattage. If not, you can tell us the make and model and someone should be able to look it up.

Yes true wattage on my LEDs are 200 watts each measured at the outlet, while they are called 350's. Not complaining because combined they work better and cooler than my 600 HPS.

 

[NEW ENGLAND]

What are your outdoor temps like,as I had mentioned if they are cool enough you could pull the outside air in through ducting directly to the tent,and exhaust the same way,through ducting to the same window.If that's feasible you could save on buying an AC,and save on your power bill as well.

 

[Amazingly_Baked]

Sorry for the late response.Thank you for your advice temperature has drop where I'm at so now I'm worried about if it will be too cold. My home state has crazy weather lol. But i will invest in a duct for outside air to come in the tent

 

[Amazingly_Baked]

What are your outdoor temps like,as I had mentioned if they are cool enough you could pull the outside air in through ducting directly to the tent,and exhaust the same way,through ducting to the same window.If that's feasible you could save on buying an AC,and save on your power bill as well.

My outdoor temp isn't so bad it's in the 85-90s now. when I woke up this morning it was 78° F in my grow tent. I've been hanging Westfield in the tent for humidity but ima invest in a humidifier

 

[Amazingly_Baked]

Wet towels* not Westfield lol

 

[thailer]

Sorry for the late response.Thank you for your advice temperature has drop where I'm at so now I'm worried about if it will be too cold. My home state has crazy weather lol. But i will invest in a duct for outside air to come in the tent

hello!! i grow in a garage outdoors and in winter, the ambient temp of the garage can get down to 20F so i make room inside the grow room for a ceramic space heater. i have one that is a baseboard style so it's very short, but long. placing heaters in a tent would be trickier. you'd need to make sure when the fan turns on the tent walls won't suck in too far. i have mine up near the ceiling now on a shelf but maybe you could suspend yours from the ceiling? this way the hot air rising doesn't mess with the leaves but they can get surprisingly close with no issues IME. like i have had branches be right above where the heat rises, but the convection of air in my heater is very light so its not a heavy flow of heat, and more natural. you don't want a heater that glows or has a light up screen but has a thermostat with temps to set it at.

for humidity, i bought ultrasonic pond foggers and I use a garbage can half filled with water. i attached the duct for the intake by cutting out a six inch hole and pushing the duct through it. theres another hole opposite from the hole with the duct. when the intake turns on, it sucks in humidity from the foggers and it goes and disperses in the grow room great. i used store humidifiers and it would raise the humidity, they broke right away and what sucked the most, needed refilled constantly. i refill this every week probably and i add multiple single head foggers so i can control the output of the fog which regulates the humidity in the tent. so if i need humidity to go lower, i would turn off a fogger but leave two running. it can also keep up with large grow rooms and heavy ventilation.

 

[hush]

Hello.Me and my husband are new to the growing scene and have some questions. We recently set up our 48x24x60 tent with (2) genesis fans, ducts and carbon filter. It gets very hot in the room the tent is in bc no ventilation comes in , just has a window in it. The temp gets to about 95 in the tent with both fans on. What can I do to drop the tempt and raise the humidity ?

Also the LED light im using is 600W

There answer is right there in front of you. Put a window AC in there and all of your troubles are solved. And yeah, raising humidity isn't difficult at all. Good advice in here already. You could also switch over to a hydroponics setup, and that could act as a humidifier for you.

 

[I'mback]

Hello.Me and my husband are new to the growing scene and have some questions. We recently set up our 48x24x60 tent with (2) genesis fans, ducts and carbon filter. It gets very hot in the room the tent is in bc no ventilation comes in , just has a window in it. The temp gets to about 95 in the tent with both fans on. What can I do to drop the tempt and raise the humidity ?

Also the LED light im using is 600W

I've read the thread. R U exhausting outdoors?

 

[Douglas.Curtis]

As temps go up, feed lower strength nutrients. Should you *know* you're going to have sustained 85F temps, you want to use a neutral soil and use teas or nutrients.

When the heat goes up, the plants begin using more and more water to stay cool. Nutrient levels which are fine at 75F, are hot enough to burn roots and cause problems at 85F and above. So decrease the ppm/strength of your teas/feed as the heat goes up. You should be using about the same ppm, just lots and lots of additional water.

 

[NEED 4 SEED]

... You want a fan that will exhaust air from the tent and - if needed, a supplemental fan to push air in....
.

Well, whats the intake fan for when the tent has an exhaust fan? It is absolutely useless other than to use more power and make more heat.

 

[Leaflet]

Well, whats the intake fan for when the tent has an exhaust fan? It is absolutely useless other than to use more power and make more heat.

Actually, an intake fan can make a significant difference. When you see the sides of the tent pulling in it is because the exhaust fan is trying to pull more air than the passive vent can pass allow. There is more airflow to be had. One can open more passive vents, but this isn't always desired (potential light leaks, loss of airflow direction control, etc.). Adding a forced intake will provide more airflow and lower temperatures. But - if you add so much airflow that the tent begins pushing outward then you will likely experience unwanted smells outside of the tent - so there is a point where too much inlet fan is not good. This is why a speed controller is usually put on the inlet fan, while the exhaust fan is always run at full tilt.
Inlet fans are very common. I keep one on standby for those occasional summer days where things are getting a little warm. The rest of the time it is just part of my passive intake system.
Fans (decent ones anyway) also make little heat and draw little power for the benefit they provide. Any heat produced should be negligible anyway as long as your fan is outside of the tent.

 

[redlaser]

You can get a temp controller/thermostat to plug the exhaust fan into so it’s not always on if not needed. Inkbird makes a decent one for 35$ that will control both a heating and cooling device. Will work with up to 1200 watts worth of fans etc.