Humidity problems

dirtyoldb

Well-Known Member
Take two plastic tubs of the same size. Put an object inside the first tub to elevate the second tub. Drill holes in the second tub and fill it with rock salt. Place the second tub and put it in the first tub. In a few days there will be some water in the bottom tub. Check the bottom tub daily to empty the water.

Or just use litter on floor for spillage when watering or open bag put in a tray.
 

FADING-SILHOUETTE

Well-Known Member
I keep my exhaust running 24/7. It hasn't got an adjuster on it, it's only a budget one but for my size tent it does the job for now, well whilst the lights are on anyway. With my tent being small I have the exhaust fan inside and my carbon filter is literally right next to my tent. Should I move it as far away as possible? I always have a window open in the room that the tents in. I'm going to upgrade my exhaust fan eventually but it's my first grow so I just wanted to get everything together
Add a pic dude... - STELTHY :leaf:
 

Deantrfc

Member
Add a pic dude... - STELTHY :leaf:
I've put a couple pictures further up the thread. I've just turned my light on after the 4 hours of lights off and its only risen to 56% today? Yesterday after lights off it went upto about 70%. I had gave them a good feed but that was about 10 hours before lights off. I guess that could have been the reason to why it went so high? Maybe if I feed earlier so the lights on for atleast 15+ hours after a feed before lights off?
 

2Hearts

Well-Known Member
Putting a dehumidifier in a tent is pointless - needs to go outside in the room then seal the room.
 

TreeFarmerCharlie

Well-Known Member
What would I do, just place it on the floor of the tent or?
It’s hard for anyone to give you helpful advice unless we know what the temp & humidity is in the room your tent is in. The bottom line, though, is you need to exit he air from the tent outside of the room if you want to effectively reduce the humidity in the tent.
 

Deantrfc

Member
It’s hard for anyone to give you helpful advice unless we know what the temp & humidity is in the room your tent is in. The bottom line, though, is you need to exit he air from the tent outside of the room if you want to effectively reduce the humidity in the tent.
It's 22.6c and 37% in the room that the tent is in. Today after lights off it had only risen to 53% in the tent. I didn't feed yesterday as I feed every other day, do you think it might be because I had fed them later than usual so there was more moisture in the air?
 

TreeFarmerCharlie

Well-Known Member
It's 22.6c and 37% in the room that the tent is in. Today after lights off it had only risen to 53% in the tent. I didn't feed yesterday as I feed every other day, do you think it might be because I had fed them later than usual so there was more moisture in the air?
If the humidity in the room is 37%, and the humidity in the tent is 53%, then you don’t have enough airflow exhausting from the tent.
 

TreeFarmerCharlie

Well-Known Member
I have 2 vents on the tent. One is fully closed the other is just slightly open. Should I open them more?
If your tent walls are sucking in hard then, yes, open them up more. If they are barely sucking in then you may need a better exhaust fan. What are you running for an exhaust fan?
 

Bodz420

Member
Bro just make sure you have a nice air flow even In flowering, I've meet people who harvested big ass buds on 70-75 Humidity in flowering just because they had a nice air flow. Personal opinion
 

Deantrfc

Member
When the vents are closed or slightly open the walls suck in hard but now the vents are half open the walls arent sucking in so much but the humidity has dropped
 

Dontjudgeme

Well-Known Member
Will something like that do?
I have that dehuey, it didnt do so well in my 2x2. But controlling humidity is really predicated on the room the tent is in. That small dehuey won’t even put a dent in the humidity in a room. Since this is where you’re drawing your air, it’s kind pointless. I would suggest getting a larger dehuey that can control the humidity in the room vs the tent. Otherwise, running a sealed tent is your best bet with that dehuey.
 

Deantrfc

Member
I have that dehuey, it didnt do so well in my 2x2. But controlling humidity is really predicated on the room the tent is in. That small dehuey won’t even put a dent in the humidity in a room. Since this is where you’re drawing your air, it’s kind pointless. I would suggest getting a larger dehuey that can control the humidity in the room vs the tent. Otherwise, running a sealed tent is your best bet with that dehuey.
After lights off today it only went upto 53% so I'm hoping it was just a mistake somehow as I haven't noticed it before after lights off. With lights on its usually around the 40% mark
 

Dontjudgeme

Well-Known Member
After lights off today it only went upto 53% so I'm hoping it was just a mistake somehow as I haven't noticed it before after lights off. With lights on its usually around the 40% mark
Maybe you watered that day. I notice my RH is slightly higher at night the day I feed or water. But as long as you have sufficient air flow/ movement you should be ok.
 

Deantrfc

Member
Maybe you watered that day. I notice my RH is slightly higher at night the day I feed or water. But as long as you have sufficient air flow/ movement you should be ok.
Yeah I had given a good feed but I'm sure it was at least 8-10 hours before lights off but I still think that's why. Today I fed about an hour after switching the lights on so has a good 18-19 hours before lights off
 

Dontjudgeme

Well-Known Member
Yeah I had given a good feed but I'm sure it was at least 8-10 hours before lights off but I still think that's why. Today I fed about an hour after switching the lights on so has a good 18-19 hours before lights off
Yea it’s always a good idea to feed first thing in the morning. Gives the plants the opportunity to take advantage of what you just gave them all day with the lights on. Best of wishes on your grow.
 
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