Anyone mount their exhaust fan and/or filters outside their tent

Sour Wreck

Sour Wreck

Well-Known Member
lets see some pics.

i am about to do this to gain about 1 foot of headroom.

thinking about suspending filter from ceiling and letting tent support weight of the fan.
 
SchmoeJoe

SchmoeJoe

Well-Known Member
Sour Wreck said:
lets see some pics.

i am about to do this to gain about 1 foot of headroom.

thinking about suspending filter from ceiling and letting tent support weight of the fan.
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There's no reason not to run the fan outside of the tent and at least a couple of reasons to do it. Mainly heat and space. The space part is obvious but the heat from the fan is pretty minor but it's one more positive. As far as the filter you could even get one of the inline filters so you could run it outside of the tent too.
 
since1991

since1991

Well-Known Member
SchmoeJoe said:
There's no reason not to run the fan outside of the tent and at least a couple of reasons to do it. Mainly heat and space. The space part is obvious but the heat from the fan is pretty minor but it's one more positive. As far as the filter you could even get one of the inline filters so you could run it outside of the tent too.
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If your using fans to air cool the lamps..sucking out..mounting it outside the tent is the only way to go. They are heat radiators. Far from minor.
 
SchmoeJoe

SchmoeJoe

Well-Known Member
since1991 said:
If your using fans to air cool the lamps..sucking out..mounting it outside the tent is the only way to go. They are heat radiators. Far from minor.
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Yeah, I was just talking about the heat generated by the fan. When ever I've run tents I've always kept the fans outside. Exhaust and hood cooling both. To take it to the next level it's important to run insulated ducting. You can also add insulation to the exterior of the metal housing of your reflector as long as it's being air cooled.
 
Sour Wreck

Sour Wreck

Well-Known Member
SchmoeJoe said:
If your filter isn't an inline it'll need to stay inside the tent.
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i was just reading about that and i guess the carbon filter is designed to sit in front of exhaust fan and pull air through it.

i also just read people use them the opposite direction which still helps smell, but without the pre-filter in play the carbon loses its capabilities sooner.

i really can go filter or no-filter with my grow location, so i'm gonna try it outside the tent and pushing air through it. will upgrade to an inline later.
 
Sour Wreck

Sour Wreck

Well-Known Member
SchmoeJoe said:
Honestly I'd never thought of putting the fan before the filter and pushing the air through the filter. It wouldn't be nearly as efficient for the fan but in such a small space it shouldn't even matter.
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when you posted i started researching and people do use them in either direction. pulling air is the proper way to do it however.

like i said, i don't really have to worry about smell too much.

would love to score some real roadkill skunk and have to worry about it, lol...
 
since1991

since1991

Well-Known Member
There is a bazillion ways to cool and climate control a tent. But the most efficient way requires more fans..and ducting (definitely insulated ducting). You need the air cooled hoods (if your using one) on its own seperate fan and ducting system. Fan outside the tent..close to the exit hole leading outside sucking hot air out. Ideally the other side of the hood/ducting goes out to one of the other tent ports and ideally to another hole leading outside...drawing cool air in through the ducting..over the hood and bulb...and out from the sucking action of the fan. Its own closed loop system. Fan on with the lights/off with the lights. Now the tent exhaust fan should ideally be outside the tent as well. Mounted close to its own exit hole as well sucking out. With only the filter and most of the ducting inside the tent drawing up stale stinky air through the charcoal and out through the fan as well. Get a fan speed controller for this fan as slower stinky air has time to get scrubbed through the filter. Its more effective. The charcoal has time to work and do what its supposed to do. You can either run this filter/tent exhaust fan 24-7 or hook it to a combo thermostat/dehumudistat to kick on when temps or relative humidity reaches above your set points. You can even buy these controller boxes to run co2 as well. One side turns off the tank while the other side (themostat/humidsitat) turns the fan on for room exhAust. So your not just blowing out fresh co2 from the tank. Once the temps or humidity gets below set point parameters..fan turns off..co2 blasts back on. I advise unhooking the intake side of the aircooled hood loop from any outside air sucking in and just draw it from the actual room the tent is in in the warm summer months. Your not going to cool a hood when your drawing in 80 degree plus July air passing over an already hot bulb. You will prolly need an air conditioning unit as well. Tents are a bitch to keep cool with non air conditioned normal air when that air is summer time hot.
 
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Chef420

Chef420

Well-Known Member
Here’s my little setup. Space is almost non existent. The veg tent is 3x2x3 and the flower tent is 3x3x6.
The fan is 435 cfm and the filter is a Can 66. I love it. 0 odours. The flower tent has 3 passive intakes, one is the exhaust from the veg tent.
 

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chakup

Well-Known Member
I'll get some pics later but I built a square frame out of 1x1 wood. Strapped filter to this to be able to pull up a little higher. Drilled holes in the ends to ziptie the tent bars to in order to keep them properly distanced. Straight pipe out the tent to fan suspended from eyebolts and ziptie from ceiling. No direct mounting =no vibration noise.
 
Sour Wreck

Sour Wreck

Well-Known Member
Chef420 said:
Here’s my little setup. Space is almost non existent. The veg tent is 3x2x3 and the flower tent is 3x3x6.
The fan is 435 cfm and the filter is a Can 66. I love it. 0 odours. The flower tent has 3 passive intakes, one is the exhaust from the veg tent.
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Like you can and exhaust setup.

Are those intakes on top of the tent?

Do you exhaust how high or low?
 
Chef420

Chef420

Well-Known Member
Sour Wreck said:
Like you can and exhaust setup.

Are those intakes on top of the tent?

Do you exhaust how high or low?
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Yes. The top two have pantyhose over the ends as filters. Works pretty well. The ducting is black lined. The fan runs at appr. 1/3 but I can adjust for moderate temperature control.
 
Sour Wreck

Sour Wreck

Well-Known Member
Chef420 said:
Yes. The top two have pantyhose over the ends as filters. Works pretty well. The ducting is black lined. The fan runs at appr. 1/3 but I can adjust for moderate temperature control.
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the reason i ask is you don't intake and exhaust on the top of the tent, correct? exhaust is at bottom, correct?
 
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