Need venting help?

[Ironmike340]

I have a 12x10 room I have a 2x4 grow tent in there with scrubber and 190cfm in-line pumping out.
I just put a 5x5 in there and gonna use that to flower. How can I go about venting both of these? I know how to vent them out but I think a t with that 4 inch inline isn’t gonna be enough. Also I will be installing air conditioner in one window and how do I go about getting air into this room. Should I install a inline sucking air into room and let tents suck from there? I worried that air is to cold from outside it’s michigan?
Also what would be an affordable co2 system for these tents
I’m using leds so heat isn’t much of issue.
Also in corner of room I wanna start my clones and young ones outside of tent in room I can seal light from room?

 

[Old Salt]

Depending on the source, they recommend three to five air changes per minute for your tents. Not knowing the height of your tents, I can't give you a figure.

I vent to another room of my house in winter. The heated, humidified air is not wasted. In summer, I vent to the outside, as I don't have air conditioning. The air for the tents is drawn from the room they are in.

I refuse to use CO2 in my home. I consider it too dangerous for an occupied house. If you do decide to proceed with it, at an absolute minimum put a CO2 detector on each floor of your home, and in the room with the tents. If a leak ever develops you and your loved ones may never wake up again.

 

[Ironmike340]

That’s how I vent. But was wondering if I need to draw air from outside in. It get humid and stale in the room .
And could I tee into 4 inch 200cfm or add bigger 6 fan
2x4 is 50 tall and 5x5 is 7ft

 

[Old Salt]

Sorry, I was wrong above. the air change is required every one to three minutes.

For the two tents, you'll need 75-225 CFM. I'd go to the high end, and use a 6" fan. I use an Atmosphere Vortex S-Line 6'' duct fan capable of 347 CFM, for just a 2' X 4' X 7' tent. It may be overkill, but I have a humid environment during the summer.

You can tee both fans onto a single exhaust duct, but I'd go one size larger to an 8" duct. I'd keep separate fans for each tent, unless you can control the air flow from each. I'm playing with a design for this using air diffusers.

 

[HigherTheHigh]

Buy yourself a Tornado 6 or 8" accoustic 1500cfm extractor, you will never buy another fan again, i run 6" to a 1x1m a 4x4 and 4x8 all hooked up using Y connectors and straight out the door.

Never had a bit of bother with my setup, i do run separate intakes though 1x1 & 4x4 get 4" intakes and the 4x8 gets a 6" .

There £160/$250 but for sure worth the money!

 

[Ironmike340]

That’s my worry is the intake? Both these tents are pulling intake fro a small 12x12 room no fresh air fed to it. It’s a bedroom.
I was wondering if I need to feed the room fresh air somehow ?
And I was thinking I could tee both tents into one 6 inch? I use butterflies in my vents so no air can reverse it backflow?

 

[Old Salt]

Backflow prevention dampers, or butterfly valves are a good idea. You still need to be able to control the airflow from each tent. Air will take the easiest path, and that could mean too much from the 2' X 4', and not enough from the 5' X 5'. You will need to ventilate the room. Whether using the home's HVAC system, or another arrangement would be best I can't say.

 

[BeanTownFan420]

I have a 12x10 room I have a 2x4 grow tent in there with scrubber and 190cfm in-line pumping out.
I just put a 5x5 in there and gonna use that to flower. How can I go about venting both of these? I know how to vent them out but I think a t with that 4 inch inline isn’t gonna be enough. Also I will be installing air conditioner in one window and how do I go about getting air into this room. Should I install a inline sucking air into room and let tents suck from there? I worried that air is to cold from outside it’s michigan?
Also what would be an affordable co2 system for these tents
I’m using leds so heat isn’t much of issue.
Also in corner of room I wanna start my clones and young ones outside of tent in room I can seal light from room?
[/QUOT

My venting made simple.

 

[HigherTheHigh]

As long as the room is cool and you can breath in it your all good for the intake to be drawn from it .

 

[Ironmike340]

I kee the window cracked threw out the day!

 

[Ironmike340]

Here let me post few pics

 

[Ironmike340]

I have been running small tent scrog and wanna hook up bigger tent for flower table for clones. And small tent for veg . Looking for best way to vent all out same window that small tent is out.
But over have a friend who pumps life air directly in with inline but it seems so cold to me. I just seems that little more outside air will help?
I know with heat coming I will run air in window I’m hoping that will provide co2