Here is current temp/humidity
I also have a small tent 2x2x5ft with 100w LED full spectrum light. I don’t have anything except light , temp/rH meter, and a duel 8 inch window fan at bottom of tent pulling in air from port, with top of door open blowing everything out. But I also have my big tent exhausting into the 2x2 tent at top
Where does the exhaust fan dump to? Into the lung room?
Yeah but I have a fan drawing air into lung room via the open door at floor level cooler air, and the heat and humidity is pushed out to the rest of the house through the top of the open door, very low humidity in my house
I’ve done a ton of experimenting with various venting options and found that dumping air into the lung room will slowly increase humidity in there. Think about this, you’re pushing very humid air out of the tent at a higher rate than any fresh air you’re able to introduce. You need to either remove the stale humid air from the space, or you need to dehumidify the lung room is my opinion…
I can only say what is working for me, and how low the RH is of my lung room the leaves I’ve plucked off dried out fast. My lung room stays around 30% rh
Sorry guys I crossed your setups while answering… I was originally talking to @SpaceFace and didn’t realize I wasn’t replying to his post.
Dan your numbers seem fine to me just would try to get temp up a bit maybe.
Temp is day 72F/ night 64F trying to see if I can get more of a purple color out of her.
This is an interesting setup. It gave me an idea: cut a hole in a big cardboard box and put it around the duct that draws air from lung room (leaving the top partially open). Then it’s drawing from a smaller area). My lung room rh is typically in the 50s or lower (I’m in SoCal and we have rain thank god but spiked RH). Maybe it does jack sh*t but it wont hurt at this point.
I can’t leave my tent door open when lights are out bc there is ambient light in garage. All part of the fun I guess
Yes exhaust dumps into lung room. I hear you, it certainly isn’t helping my cause, necessarily, but it’s a large room and taking various readings across the room all read in low 50s if not lower (outside of these few days with rain).
We’re in and out of garage several times a day through roll up garage door so air is at least exchanged frequently save for during the night.
I don’t have a way to get exhaust duct to outside. Not intending to be a naysayer here, just trying to work within limitations.
@BobbyDigital hey you don’t really have to worry about negative pressure if you are growing in a room versus a tent correct?
@BobbyDigital with Central AC in the room
If you can’t exhaust outside, I’d recommend a dehumidifier in the lung room to bring overall humidity down.
If you aren’t exhausting the room anywhere, you are not going to get much fresh air in there passively… the room will just sit stale and build up over time. Another words, unless air is sucked out, fresh air is not going to pull in at the rate you need.
Opening the door often helps but won’t keep it controlled consistently. Can you leave the door cracked open all the time for a better fresh air exchange?
No windows in garage and not really feasible to leave door cracked. But I appreciate the ideas and I’ll see what I can do to get better exchange in lung room. Maybe I’ll just bite on a dehumidifier. Seemed like overkill but given my limitations, looking more and more like the best available solution.
Any way you cut it you need some fresh air being pulled into at least the lung room and the old air vented out, any way to cut a small hole in the wall to something and make a box over it to connect vent pipe, as long as exhaust fan is on 24/7 cold shouldn’t be a problem and a small tin cover for the outside.
Sucks bc you’re kind of chasing your tail without being able to exhaust out…
What I can do, is open the garage door a bit. I’ve got lights out during day to battle lower night temps with lights on. So should be able to work it down some or at least draw fresh air during day and home. I’ll Use a small dehum during night and roll with it. I’m a little less concerned about humidity when lights are on with much higher temps.
Hi Family
Love the stealie
Are you still on the train??
I’m headed to Vegas in May…
You need a decent size dehumidifier inside your lung room…
It will work like a charm…
Don’t get a cheap one make sure it a good one…
This is what I have it works great.
Happy Growing
If you leave the door open don’t let any light get in to your tent if your lights are out during the day .
Your plants my hermaphrodite …
I am still on the train. Trying to make Vegas myself. Probably May. Phish at the bowl in April so…
Tent is good and dark.
Thanks for the link. I ordered one for 1k sq ft room (my garage is right around 800) bc I can get it today. We’re splitting for weekend so wanted to have something out there to do whatever it can. If it doesn’t do a great job I’ll return and go with your rec.
