Jump to content

Welcome to Grasscity Forums - Register now for FREE
Register now to gain access to all of our features, it's FREE and only takes one minute.
Once registered and logged in, you will be able to create topics, post replies to existing threads, give reputation to your fellow members, get your own private messenger, post status updates, manage your profile and so much more. This message will be removed once you have signed in.
Create an Account

Grow Room Humidity Problem


  • Please log in to reply
 

#1
Nor-Cal-Bud

Nor-Cal-Bud

    Registered User

  • Registered Upgraded
  • PipPipPip
  • 54 posts
Hello Fellow Stoners,
I'm in my 7th day of flowering and have a small issue with humidity in my grow room. The room is built in my garage and temp variations are present from night to day. I flower at night in an attempt to minimize the heat that is coming on with spring.

Here' my issue, I never had a humidity problem while vegging, but now that I have introduced Co2 and sealed the room, I average about 80-90% humidity. From what I have read, you need to seal the room, introduce Co2, have plenty of air circulating. I am using the Air-3 Environmental Controller.

I've attached a drawing of the growroom, then also added a few pics, as the drawing is a little manipulated.

So I guess MY QUESTION is, how do I attain and keep constant a lower humidity level?

ABOUT THE IMAGE -- The BROWN BOX is the grow bed (4' X 14') filled with Coco

Attached Thumbnails

  • growroom.jpg


#2
Nor-Cal-Bud

Nor-Cal-Bud

    Registered User

  • Registered Upgraded
  • PipPipPip
  • 54 posts
Here's an older pic of the room at about day 25. I went in to take more pics, but missed the opp, the lights were off.:eek:

ONE THING TO NOTE>> my Fresh Air Intake is only 6" and the fan the sucks out the old air is 6". I'm thinking I may need about 4 Fresh Air Intakes.

Attached Thumbnails

  • 7.jpg


#3
Merfolk

Merfolk

    Banned

  • Banned by Moderators
  • 829 posts
Where does your intake come from if i may ask ?


if its from inside the house, where are you pulling from ? and you just go ahead and drill 4" Holes in your wall? no problem ? or do you hide it?


im just curious if you have intake from another room, is it possible for that room to smell alot like MJ?

#4
Nor-Cal-Bud

Nor-Cal-Bud

    Registered User

  • Registered Upgraded
  • PipPipPip
  • 54 posts
The fresh air comes from the garage. What I have done is built the box inside my garage. All "used / outgoing" air is vented up into the attic.

The air going into the growroom is ambient air from the garage (both light cooling air and growroom air)

I have revised the drawing and added a few notes about the environment.

My best guess is that I need more "fresh air intakes"(red) for more efficient / faster removal of high humid air.

Attached Thumbnails

  • growroom.jpg


#5
GigZ-16

GigZ-16

    Banned

  • Banned by Moderators
  • 673 posts
Increase the air intake and outtake, or just buy a dehumidifier from wally-mart for like 20-30$, and set it on high for such a big grow space.
  • medmanmike likes this

#6
Nor-Cal-Bud

Nor-Cal-Bud

    Registered User

  • Registered Upgraded
  • PipPipPip
  • 54 posts
By increasing the intake / out put, wouldn't that defeat the purpose of the Co2? or do you really exchange the air about every hour while using Co2?

Thanks for the replies
NCB

#7
Guest_Norma Stits_*

Guest_Norma Stits_*
  • Unregistered / Not Logged In

By increasing the intake / out put, wouldn't that defeat the purpose of the Co2? or do you really exchange the air about every hour while using Co2?

Thanks for the replies
NCB


if the room is sealed and the only exhaust/intake is used for cooling the lights then it shouldn't suck out all the c02.
Be careful with dehumidifiers they put off a ton of heat.
what kind of fan are you using for exhaust atm and how much ducting is it pulling through?

#8
Nor-Cal-Bud

Nor-Cal-Bud

    Registered User

  • Registered Upgraded
  • PipPipPip
  • 54 posts
I'd say pretty much sealed, there are a few small leaks.

As for the fan, I am using 1 ea. 6" Ecoplus for the lights and 1 ea. 6" Ecoplus for the Carbon Filter that exhausts the room.

Posted Image

#9
Nor-Cal-Bud

Nor-Cal-Bud

    Registered User

  • Registered Upgraded
  • PipPipPip
  • 54 posts
I introduced a small heater into the room and am tracking my temps and humidity levels about every 3 hours. Looks like the heater is helping out some. Once the lights come on I'll get a pic

#10
Nor-Cal-Bud

Nor-Cal-Bud

    Registered User

  • Registered Upgraded
  • PipPipPip
  • 54 posts
ok, I'm at day 10th of flowering and took readings on the humidity / temp. all day. Seems like I needed to tweak the Air-3 a little. I took the humidity down and just having to evacuate the air in the room a little more than I would like, but hey, it's working.
:hello::smoking::D:cool::):rolleyes::P


My temps / humidity levels are:

60 deg (low) - 73 deg (high)
50% humidity (low) - 84% humidity (high)
The average humidity is now about 60%. The 84% high I got was what prompted me to tweak the controls on the Air -3


Here's a few pics I got this morning

SOLVED

Attached Thumbnails

  • 9.jpg
  • 8.jpg


#11
Dewave

Dewave

    Registered User

  • Registered Upgraded
  • 435 posts
Dude this seems like right up Rumpleforeskins alley, you need to ask him! Hes the man on garage room and co2 grows.

#12
2muchtime

2muchtime

    Registered User

  • Registered Upgraded
  • PipPipPip
  • 48 posts
love you idea but the meaning of a seal grow room is there is no in or out vents you control everthing from inside the room. meaning add a co2 controler, dehumidifier and a/c unit. if you do it without all the right equ. you will not be getting the best out of your equ. to keep your humidty down you will have to vent more that means you have to use more co2 and you waste alot of it. so vent more or get the right equ.
good luck

#13
Nor-Cal-Bud

Nor-Cal-Bud

    Registered User

  • Registered Upgraded
  • PipPipPip
  • 54 posts
So I worked thru the humidity with a de-humidifier. All went pretty good, but now that I have removed the co2 and de-humidifier, I have a small case of Powdery Mildew creeping in. Nothing that can't be managed with a fogger /atomizer and a little greencure.

Here's a pic of where I'm at with it

Attached Thumbnails

  • garden.jpg


#14
Don Piano

Don Piano

    Glenn Beck in disguise

  • Registered Upgraded
  • 1,965 posts
Just wondering, Did you clean that re-bar before bringing it into the room?

#15
NorCalHal

NorCalHal

    Registered User

  • Registered Upgraded
  • 197 posts
It would seem to me that you would want a CO2/humidity/temp controller. When I ran CO2, it was close to the same set-up, but we had an exhaust plugged into the controller. When the humidity went high, it would shut off the CO2 and exhaust till humidity went down. It's been a while since running CO2, but if I remember correctly, that is what we did.

#16
Nor-Cal-Bud

Nor-Cal-Bud

    Registered User

  • Registered Upgraded
  • PipPipPip
  • 54 posts
Nope, left the ree-bar dirty from last years outdoor grow. Never had a pest problem, just a little powdery mildew.

I was using an Air-3 Atmospheric Controller, but about 30 days into flowering I noticed it had an AMBER LIGHT on the face of the unit that never turned off, even in the dark it was on. I was a bit frustrated so I took all the Co2 equipment out. I ran the existing bottle dry manually and everything bounced back. I a little strecth on a few of the large tops, but it really popped back.

I have em drying right now and think I should see about 3.0 lbs on this one. with a 33 day veg.

#17
ocitown

ocitown

    Compliant420Grower

  • Gold Member
  • 7,400 posts


#18
haz155

haz155

    Registered User

  • Registered Upgraded
  • 656 posts

Hello Fellow Stoners,
I'm in my 7th day of flowering and have a small issue with humidity in my grow room. The room is built in my garage and temp variations are present from night to day. I flower at night in an attempt to minimize the heat that is coming on with spring.

Here' my issue, I never had a humidity problem while vegging, but now that I have introduced Co2 and sealed the room, I average about 80-90% humidity. From what I have read, you need to seal the room, introduce Co2, have plenty of air circulating. I am using the Air-3 Environmental Controller.

I've attached a drawing of the growroom, then also added a few pics, as the drawing is a little manipulated.

So I guess MY QUESTION is, how do I attain and keep constant a lower humidity level?

ABOUT THE IMAGE -- The BROWN BOX is the grow bed (4' X 14') filled with Coco


hey man, did you have any problems with your carbon filter? Ya know with your high humidity levels and all :smoke:

#19
blindbudsmoker

blindbudsmoker

    Registered User

  • Registered Upgraded
  • 371 posts

Increase the air intake and outtake, or just buy a dehumidifier from wally-mart for like 20-30$, and set it on high for such a big grow space.


20-30 doller dehu wont do shit once they get moving

also not sure where in nor cal u are but if u are inland the heat will kill you this summer and u will need to get a ac in thier, once thats done u can close off that intake and run co2 full time. surprised u made it as long as u did with no dehu. in a 4 light room our humidity hits 100% in 30 minutes of the lights going off without the dehu on.

Edited by blindbudsmoker, 26 October 2010 - 11:10 PM.



2 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users


    Bing (1)