Having an issue getting tent rh low enuf.
I always pack my tents and i know a big defol would help. But im wondering for when i break down how helpful rerouting exhaust outside could really be. Nver done it.
Rt now i exhaust 2 tents out the ceiling of the lung room into an adjacent basement BR.
Dehumidifier sits in the lung room with constant drain.
Lung room isnt much bigger than the 2 tents.
Dehu of course cranks the temps up.
Tents consistently 20% more humid than the lung room(and slightly cooler?)
I tried forcing lung room air into the bottom of the tents with an inline fan but it only warmed the tents slightly and didnt move the rh. Still low 60s rh inside and low 40s rh outside(ac infinity sensors in and out so no variance there)
Can still crank the dehu lower for late flower but that comes with more heat.
Window vent isnt a tidy option here so it would be a compromise.
Is it worth it??
Does your current lung room have an exhaust and intake?
What’s the outside temp and humidity and your lung room temp and humidity?
What’s the temp and humidity in your tent
No exhaust for the room rn. Just starting to get cooler at night here. I figure since the lung room stays a good rh drawing off that air would be counter productive.
I also looked at those dehumidifier with the tent hose from spider farmer.
Room humidity is made up of, temp and moisture content.
In simple terms. Example, 1 cup of water is floating in 1sqft of air (think fog). At 60f there’s 70% humidity in that 1sqft box. At 80f there’s 40% humidity in that box. Same amount of water, but temp changes room humidity.
edit, saw your update
So let the room warm some?
So chat gpt says 4% of you humidity gain is from the temp going from 82 outside to 78 f inside
What’s the outside the house temp and humidity %
Really want to try venting out but my only exit place is an "unfortunate place to have ducting
To pull outside air in? I have tried that…mostly its too variable outside. Mostly humidity will be the same or slightly higher than tent humidity.
Was super simple for me, but it did make a big difference. Also MASSIVE difference in the smell of the lung room in flower
If i could get the tent rh anywhere near the lung room rh id be set
I’d move the dehum in the tent or
Add 1-2 extra tent fans, on exhaust and intake so your tent matches the lung room or
Or, vent the lung room with fresh air if it’s lower humidity.
Others might have practical experience
Holy shit. Google already hit me up with a ad for the spider farmer dehu…just now…
Spying mfs
More expensive but a small ac either portable or window unit in lung room 
I have a portable ac. Just too much operating cost to justify. Also theres only 1 exit and the hot air has to travel a ways to get out. I did that too but it just draws too much juice
Assuming your outside air is dryer, yes it can be beneficial to have an intake and exhaust that draws air from outside, although I’d recommend it be filtered air if possible.
Of course when it rains, might not be beneficial. That’s when having it on a controller is a good idea. A dehumidifier in your lung room will complete the chain for dryer air.
To answer your original question yes absolutely it makes a difference. But again assuming the outside air is dryer. If you live somewhere where relative humidity is always high like in a swamp…nope. Better to stay sealed, scrub the air consistently keep your humidity on point which devices in your area. CO2 enrichment is almost always required in these instances though.
I figured if i can really duct the tents outside well, central air from the house would replace it. Im talking about ducting out not in. From the tent 25’ across the basement to a small window
Assuming you have somewhere for fresh air to be drawn in, yeah that can work. If you can make it on the opposite side of your house where your central heat and AC gets to condition near significantly before it gets there to the extraction, sure.
In my experience, it will require some sort of modification as most homes are sealed up quite nice for energy efficiency. It’s pretty tough for a fan to vent when there’s nowhere to draw the air from.
In any case you will want the exhaust air to actually exit your home and go outside, unless you have some sort of fancy recirculating Network which I’ve seen but have no idea the efficacy of. CO2 is a good idea in these instances, although if you got a bunch of animals in the home, you might have decent CO2 levels anyhow.
And it should be noted, your house is going to reek of dank in this kind of setup LOL. One of the main advantages of exhausting immediately outside is you can have effective odor control like a carbon filter, ozone in some instances, or a calibrated cover-up like OdoBan nozzles. You can of course do this recirculating in the same airspace if you’d like sealed, with the carbon at least.
In my instance I have my extraction fans on variacs. If it rains or the humidity is insane outside, I turn the fans down or off for a bit. This allows my dehumidifier to catch up.
Hope you get it figured out these engineering feats are some of the most" fun" things about the hobby 
Agreed. Once you make a breakthrough and get a problem ironed out you feel you can beat the world.
When this run shuts dwn ill re-kajigger the room and chamge my ancient carbon filter. That will help also