Help with a CO2 system design

[jackie treehorn]

I am in need of information regarding Co2. My g room is 350 cf , with a passive intake underneath the door to the room (1/2 inch or so, opening to my kitchen) and venting out the ceiling of the room into an upstairs closet. I would like to begin using co2, but I want to know if

a) passive intake underneath the door is kosher as I know a room is supposed to be "sealed"...

b) if it is safe to exhaust into a closet upstairs rather than outside.

I am planning to get a full-environment controller that would turn off co2 whenever the blower vents for humidity. Thanks in advance to anyone who can help or provide a useful link if this has already been discussed somewhere.
Peace

 

[Albert Hofmann]

http://www.icmag.com/ic/search.php?

 

[jackie treehorn]

the above post simply leads back to the same search i tried initially. Again, anyone who can speak to the above two questions, thank you in advance.

 

[Cranberry]

TreeHorn: You should always vent to the outside..... You also will need an air intake of some fashion, under the door could work. Old schoolers use to leave the door cracked. Enjoy your hobby!

 

[Albert Hofmann]

OK, i'll try a little harder Without a sealed room it is going to be a waste. First lets talk about odor control. For totally effective odor control in a nonsealed room you need negative pressure...this is achieved by having an exhaust fan attached to a carbon scrubber exhausting air out and drawing new air in 24/7 (passive intake). This principle alone makes CO2 a complete waste of time and money.
If you don't care about odor control, then yes your passive intake will be fine and exhausting into another room will be fine. CO2 is an awesome addition to a room...if you have tweaked and mastered every other aspect of your garden and your strains...if you are new to this or have not yet achieved several successful grows then it will be more trouble than it's worth

 

[jackie treehorn]

no doubt. I am no rookie and I am excited as hell to get with this program...from what I've seen up close, suplimental co2 can do very nice things to plants...so far what i've learned through doing leads me to garnering info before I make financial decisions. i appreciate your candid advice.

It is not my plan to have an exhaust fan venting the room 24/7. In fact, I am not sure if I will have one at all, but if i do it will certainly be on a timer linked directly to the humidity, which will only be a factor in the last two weeks. It is winter and i've grown successfully in this room in the summer without venting at all. Having lost a bit of my last crop to bud rot (not this room!) I want to be prepared, is all. If I choose to use co2 in this upcoming grow (month or so away) I am going to get a controller for the tank and also a complete environment controller. This allows co2 to be controlled a) to shut off at "night" of course, and b) allow the co2 to also shut off anytime during the "day" when the blower started to vent due to high humidity, which I will also control with this environmental controller.

SO, and if you are still reading thank you, I simply want to know if there would be any problem using co2 (metered tank) in the above environment.

 

[EcoNepenthe]

co2

co2

The adding of co2 is always a benefit. If the area can be sealed, do so, if not, I believe the loss is marginal compared to the plants gain.But from your setup description I think you will benefit immensely, especially if time is a factor. co2 does speed up the process. It's nice when you can hurry Mother Nature along just a bit, especially when you're stash is low.nspections.
You seem to have all the bases covered.
Success w/ya grow!!!
Stay safe!!

Eco

Watch em grow!!!

 

[cabanetforester]

I don't think you have to vent the space if you get a dehumidifier in there, given you can control the temps.

Seal your lights, use air cooled hoods. No air exchange is needed with the dehu in the grow space. An inline fan sitting on a filter can scrub the air in the space if smell is a concern.

What is making you have to vent the space?
Temps?
Humidity?
Co2?
smell?

I say try to do what it takes to keep the space sealed. Try to have everything stable as possible is easiest when there aren't air exchanges going on causing massive fluctuations over short periods.

How many watts are you running in the space?
I think you should look at trying to cool the space passively through the ducting? that cools? your lights.

You might be able to achieve ideal conditions without having the enviro controller.

Hope this was some help. CF

 

[jackie treehorn]

yes it was! thanks!
i effin love the info collective here