Blending air between 2 rooms. Please help.

[Treetroit City]

I need to find a good way to mix air between two rooms, my veg and flower.

The purpose being AC and co2 in both rooms with one unit covering both rooms.

Veg is 8x13 and flower is 12x13. These rooms are next to each other.

I have two 6" vortex that I'm thinking of using each pulling in different directions. Would this be sufficient to blend the air?

Should I get a bigger fan(12" 1060 cfm) and go that route with the fan being the active and a 12" passive duct going the other way?

Need to figure this out soon, thanks in advance.

 

[-Capfan-]

You have the right idea, i use two 8" fans on opposite ends to circulate the rooms..


What kind of c02 system will you be using ? Tanks / Propane ...


Well it doesn't matter i suppose, if you can adjust your ppms, perhaps a even 1000 would be sufficient enough to supply both rooms and reap the rewards, and be cost efficient

 

[growingcrazy]

Just keep your veg room temp set to just above flower room temp. Use the flower as the lung for the veg.. Put the two 6" fans sucking out of the veg and blowing into the flower with passive intake in the veg room. This should pull cool flower room air into the veg room when there is a need for cooling.

That should allow you to circulate plenty of co2 into the veg room aswell I would think.

 

[Treetroit City]

You have the right idea, i use two 8" fans on opposite ends to circulate the rooms..


What kind of c02 system will you be using ? Tanks / Propane ...


Well it doesn't matter i suppose, if you can adjust your ppms, perhaps a even 1000 would be sufficient enough to supply both rooms and reap the rewards, and be cost efficient

Starting with bottled co2 cause I got all that stuff.. Never gonna try to hit 1500 I'll be closer to the 900-1200.

Just keep your veg room temp set to just above flower room temp. Use the flower as the lung for the veg.. Put the two 6" fans sucking out of the veg and blowing into the flower with passive intake in the veg room. This should pull cool flower room air into the veg room when there is a need for cooling.

That should allow you to circulate plenty of co2 into the veg room aswell I would think.

You just fixed my head, thank you.

 

[Puscifer]

I don't know buddy, a 4k flower room plus the wattage/size of the veg room might tax your mini...
A lot will depend on how hot it gets outside.

 

[-Capfan-]

Hopefully you are rolling with 50# tanks

 

[OldSSSCGuy]

If you are using the flower room as the lung pulling fresh air, you will play heck keeping high PPMs.

 

[Treetroit City]

If you are using the flower room as the lung pulling fresh air, you will play heck keeping high PPMs.

No fresh air, two sealed rooms sharing a space.

 

[growingcrazy]

You just fixed my head, thank you.

Anything to help a fellow resident of this fine mitten!

 

[OldSSSCGuy]

Don't forget to anticipate a potential light leak between the 2 rooms. I put 2 8" flexible elbow extensions together, each painted black on the inside and making it kind of a S-shaped tube, for the passive intakes. Light can't go around corners if nothing reflects it.

 

[Treetroit City]

I don't know buddy, a 4k flower room plus the wattage/size of the veg room might tax your mini...
A lot will depend on how hot it gets outside.

Well I guess I'll find out soon. If it struggles I guess I'll get another for the veg room and seal everything back up.

Hopefully you are rolling with 50# tanks

Nope, 20's. At first I'll be using the cycle timer regulator with a photocell so it's off at night. As long as I can keep it above 300 ppm at first I'm good.

I don't expect to have this running full steam ahead right off the bat. I'm sure it will take a while to get dialed in. This is no hit it and quit it type of run. I'm planning to be here for a while.

Anything to help a fellow resident of this fine mitten!

Thanks again. Digging your no till bed. I'm currently reading the book "Teaming With Microbes" trying to get my organic learn on.

Don't forget to anticipate a potential light leak between the 2 rooms. I put 2 8" flexible elbow extensions together, each painted black on the inside and making it kind of a S-shaped tube, for the passive intakes. Light can't go around corners if nothing reflects it.

Been think about myself. I'm going to order Thermoflow ducting which is black on the inside and doing long runs from ceiling to ceiling as opposed to going thru the wall separating the rooms.

 

[Granger2]

I don't think it'll take more fans to ventilate the rooms separately. This will make it possible to shut off CO2 in the flower room in the last part of bloom.

You'll need bigger fans no matter how you do it. Where's the AC? How big is the room these "tents" [to differentiate] are sitting in?

I would cool the room and ventilate the "tents" with room air. In each "tent," you'll want to have passive intake [twice the sq in as exhaust fan sq in], and fans exhausting into the room, Each "tent" will have its own CO2 feed line.

I hope you're talking about air cooling the lamps with outdoor intake and outdoor exhaust, or into an attic, etc. What kind of lighting in the veg room? How high are your ceilings in the "tents?"

For the flower room you'll need at least a 12 in fan. A 14 would be better, assuming an 8' ceiling. Maybe a 12 and the 6" you've got. Good luck. -granger

Oh yeah-to figure fan and intake sq in, you have to calculate using A=pi x r squared. 2 - 6" don't come close to equaling 1 - 12".
eg. 1/2 diameter [12"]=radius. Radius squared =36. Radius squared times pi [36 x 3.14 = 113 sq in.] And 6" fan or intake - 3 squared =9 x 3.14 =29.26 sq in.

 

[Treetroit City]

I don't think it'll take more fans to ventilate the rooms separately. This will make it possible to shut off CO2 in the flower room in the last part of bloom.

You'll need bigger fans no matter how you do it. Where's the AC? How big is the room these "tents" [to differentiate] are sitting in?

I would cool the room and ventilate the "tents" with room air. In each "tent," you'll want to have passive intake [twice the sq in as exhaust fan sq in], and fans exhausting into the room, Each "tent" will have its own CO2 feed line.

I hope you're talking about air cooling the lamps with outdoor intake and outdoor exhaust, or into an attic, etc. What kind of lighting in the veg room? How high are your ceilings in the "tents?"

For the flower room you'll need at least a 12 in fan. A 14 would be better, assuming an 8' ceiling. Maybe a 12 and the 6" you've got. Good luck. -granger

F

The AC is a mini split with the indoor unit mounted in the flower room.

No tents involved. Two stick built rooms sharing one half of a pole barn. Basically a 13x20 room with a dividing wall separating the space into 13x8 and 13x12.

Not air cooling the lights at all, they are Gavitas and thus cannot be air cooled.

Lighting in the veg room will consist of 2x600 and an eight lamp T5 so a total of 1632 watts along with the 4000 in flower so a total of 5600 watts I need to cool.

At 4000 btu per 1K in light that would put me at needing 22,400 btu of cooling. Mini is 24,000 btu.

Here is my build thread, might make more sense with pics.

https://www.icmag.com/ic/showthread.php?t=254875

 

[Puscifer]

I didn't want to say it Third Coast, but sealing up the veg room and adding a mini split is your best bet. 'Tis the way I had to do it but being able to keep temps perfect 24/7 is well worth it. You've got a pretty pro set up going on, a mini split for the veg area will really compliment the already bad ass build.