[WaxyTaxi]

LUNG ROOMS!!

My new adventure.

Here are some links for you to check out if your not sure what I mean..

https://www.herb.com/cea.html

https://progressive-growth.com/infor...re-eric-biksa/

https://en.wikipedia.org/wiki/Contro...nt_agriculture

https://www.grozine.com/2014/01/30/in...ng-lung-rooms/

Check out the last couple pages of this thread I started to see what granger/dhf have to say on them as well...

https://www.icmag.com/ic/showthread.php?t=310308&page=4


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I'm planning out my next grow and being in a state that has 4 seasons...I need consistency in my grow environment..

Few questions I have:

-has anyone ran a lung room in the winter using the outside air instead of an a/c? pros & cons

-PICTURES?! I have yet to see a picture of a commercial/small scale lung room...

-Size of your overall lung rooms compared to the grow and is it a dedicated room or shared(laundry/work area)

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Few ideas I have for you to think about if your NOT running your rooms like this:

-if you place your giant A/C unit in the room, not only is your HIDs drying the place up, but so is that cool constant dry air.. very hard to achieve a higher VPD.. placing it outside the room and bringing it in twice per min will allow the humidity to stay up

-Year-round constant control over multiple rooms..

-No need to bring air from outside or exhaust outside...everything is done in the lung room..

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If you are one of those growers who persist that anything over 50%RH in flower will cause mold and is bad for growth, this is for you:
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"CEA optimizes the use of resources such as water, energy, space, capital and labor."-wikipeida

^^^^^this is what I want to dedicate this thread to...

MONEY SAVED IS MONEY EARNED.

[McKush]

hey waxi,

saw your posting on 8k flower room cooling thread also. I use a lung room and studied up on CEA for my build - my build is documented in the growroom design section. I felt it important enough to allocate just a hair under 50% of my 9x11 or so floorspace for a lung.
my FR and VR both are behind a common wall & locked door and serviced by the same 10" fan & CF. The lung also has a desk and serves as my work area and smoking area. The 10" phresh CF in the FR filters out growing smells as well as mmj smoke which was a requirement of mine.

good luck with your build, don't rush construction until you are sure about your design and then also realize you likely won't have it 100% dialed in until you run it for a while and finish tweaks, expect to make changes once you see it operate.

[WaxyTaxi]

Sounds like you got a very organized/efficient setup Mckush, making it simple as it should...

Since the winter is coming up, If I brought the night air in on a temp controller, that would act like an A/C to cool the lung room right? I could finish two harvests without an A/C if I could make this work..once feb/march rolls around I could upgrade to an A/C unit...

Does this sound like it could work for an 8k flower room and a 4k veg room? keep in mind my veg room stays in the 80's and MI gets super cold winters... by October were talkin 50 degrees and downhill from there at the times I run my rooms..

If this is a dumb idea please let me know..I've cooled many rooms with the winter air and would hate to drop close to 5k and extra electricity for two harvests..

Then again, I will spend 5k and the electricity if you can give me some good reasons to skip the inline/winter air route...I'm all ears..

[einsteinlady]

https://www.icmag.com/ic/showthread.php?t=300255

Djm kills it with bringing in cold air to cool room. Read that thread,

[WaxyTaxi]

Originally Posted by einsteinlady

https://www.icmag.com/ic/showthread.php?t=300255

Djm kills it with bringing in cold air to cool room. Read that thread,

That's how I got here! Big fan of his.. Not sure if he runs a lung or not? I thought he just ran them directly into the rooms in the winter and ran a mini split in his rooms in the summer...

[raphenilweed]

@WaxyTaxi
Can you describe the chart? I have seen it before but can't remember quite exactly the breakdown. Looking for this for a while now. Thanks!

[WaxyTaxi]

Originally Posted by raphenilweed

@WaxyTaxi
Can you describe the chart? I have seen it before but can't remember quite exactly the breakdown. Looking for this for a while now. Thanks!

Example:

if your growing a more sativa dominant plant start with creating the VPD it may have came from..

mid to upper 80's with an RH of 75-80%...
---

We can find this ideal range by starting with the temperature of the environment we want to create and match it to the humidity via the orange squares.. the higher the number in the square..the higher the vpd...the more your plants sweat...the more they can party...

Now we don't want to keep it that high the whole way through...only in veg, when you flip to flower, you gradually lower it to a temperature that will stay around 65-70% humidity(using your chart that's about 66F-79F) to retain flavor,yield,quality... the dance between humidity and temperature is crucial.

[McKush]

Originally Posted by WaxyTaxi

Sounds like you got a very organized/efficient setup Mckush, making it simple as it should...

Since the winter is coming up, If I brought the night air in on a temp controller, that would act like an A/C to cool the lung room right? I could finish two harvests without an A/C if I could make this work..once feb/march rolls around I could upgrade to an A/C unit...

Does this sound like it could work for an 8k flower room and a 4k veg room? keep in mind my veg room stays in the 80's and MI gets super cold winters... by October were talkin 50 degrees and downhill from there at the times I run my rooms..

If this is a dumb idea please let me know..I've cooled many rooms with the winter air and would hate to drop close to 5k and extra electricity for two harvests..

Then again, I will spend 5k and the electricity if you can give me some good reasons to skip the inline/winter air route...I'm all ears..

hey WT - i'm not far below you so my weather is similar but not as cold/snowy depending on where you are at, up or the glove.

only issues i see with your idea i'm sure you already identified, outside humidity/lack of being brought in, possibility of smell escaping and whatever those consequences are for you (perhaps that is zero for you.)

I don't have any first hand experience with using outside air.

what i did was a bit cheesy though. I had a portable 12k Danby AC which has a 6" exhaust but this model pulled in ambient air for the cooling. I've seen other Danby models with dedicated inlet port, so I fashioned my own snorkle for the fresh air intake using a 5 gal bucket and 12" air duct flexible hose, bunch of aluminum vent tape, and a bit of DIY. I've run twice now in the summer and have been fine - however - i'm not cooling 8K. I have 1 epap and will have a 315w CDM veg light so it cools that nicely. I have a real hard time detecting smells outside by the exhaust.

your relative humidity in winter is probably the biggest concern, security issue would be my first concern for smells but that is my situation.

Addendum : if you are sure you only have 2 harvests in the room and then on to something else, that is a strong argument for waiting until you are in a permanent location prior to spending the money, you can also check out the Breeze mini-splits that are line set sealed for DIY, perhaps you can unhook the line set and not loose all your refrigerant... i would expect a top off to be required after moving the unit and you need to understand what you are doing or risk putting too much/little in both of which are bad.
I've been learning some AC fundamentals from my aged dad who has deep background in this so that I can install my own MS.


5K seems high to me for a unit + installation, but i haven't been looking closely at it since last year.

[kowhite]

So....a few question concerning how to optimize the airflow from your lung room throughout the rest of the rooms of the grow. I have a 15' x 12' x 8' room that will be separated into three rooms. A veg room...9' x 5', a flowering room...6' x 12' and a lung room...9' x 7'. What I envision is one fan blowing fresh air from lung to flower, another blowing air from flower to veg, and a third blowing from veg back to lung. My first question, is this an efficient way to circulate fresh cool air through my rooms? Second, if so I should be able to put controllers in each room that prompt the air control to kick in with the necessary corrections from the lung room, right? Third, granted that first to questions received favorable answers, say given that the fresh air has to flow through the flowering room to get to the veg room...if the veg room needed to be cooled and the controller activated the AC in order to do so, would the cooler air flowing through the flower room (which at the time was not too warm) on it way to the veg room make it too cold in the flower room perhaps damaging the flowers in the process? Should I maybe reverse the flow with cooler air going into the veg room first? Should I just completely rethink my airflow situation?

I plan on installing a ductless AC unit that is rated to cover 400 sq ft to control the temperature...which brings to mind the flip side of the coin and makes me wonder about the same problem with heat. Anyway enough questions for now, thanks in advance to anyone who decides to bless me with some solid info.

Peace

[Ichabod Crane]

I have four flower rooms that are 5 x 7. Each room has 2k of hps. They are run on a flip so 4k hps max. The lung room is 4 x 10.

I draw cold air in to the lung room in the winter. The issue I have is icing of the fan.



You need to get a fan that has all metal blades in it. If you dont and it ices up and the vibration will break the ice free and shear off the blades. I am running a 6 inch fan threw a 4 inch hole with a back draft damper.

When you use a fan like this it is best to place the thermostat up high and draw the air for your room there as well. The fan should be pointed at the floor with fans pointed around to stir the air up in the room.

This set up will cool the room with outside temps up to about 40 degrees.

I run coco and use about 25% extra for run off. Plant size is about finish weight of 12 to 14 ounces with five plants per room. With these to working together I can keep the RH at 55 to 60%.

You will also need carbon scrubbers to control smell. These should be placed out side the flower room. The carbon at this RH can cause mold and is best not to have it in the flower room. With them in the lung room the positive pressure that builds up in the lung room wont let the smell out.

I also have my ballast in my lung room. That way they are cooled as well.