Co2 regimen?

[chaingmai]

Hey everyone this is my first post here but I have been reading and learning a lot here for a couple weeks. I was curious how everyone times his or her co2 setup. I run mine for 45 minutes out of very hour during lights on. Then I run exhaust for the other 15 minutes. During lights off I just run it 15 minutes out of every hour. I am a little concerned that I will need to run the exhaust more later on in flowering due to odors. Should I just run it while the co2 is on and hope the plants get some? Thanx everyone.

 

[chaingmai]

bump?

 

[Guest]

During lights off co2 is a waste,I run my cd-6 in an 850 cu ft room for 8 1/2 minutes every 45 minutes for 1500 PPM,every hour would be 1000 PPM and if I went for 8 1/2 minutes every half hour,it would be 2000PPM.Frequency and duration of burn is determined by how you set your cyclestat,you should never exceed 10 minutes burntime it should be between 5 and 10 minutes,not sure what you're doin bro I think this is the second time I've seen this thread.What exactly do you run for 45 minutes each hour??

 

[chaingmai]

oh Its a co2 tank with an emiiter system (a solidoid valve and a timer.) Its made by hydrofarm. Im really only running a little during lights off , i was thinking my girls needed some co2 and o2 because otherwise my room is sealed off with no fresh air intake. I could add an a fresh air intake for the room but it would be a pain in the ass. thanx for the input

 

[Guest]

You dont need a fresh air intake or co2 when the lights are out,I have a window AC that recirculates the air all night no fresh air coming in

 

[chaingmai]

ok cool thats the part i was not sure about .I have two fans blowing air around in there, so that should be enough for the night cycle. thanx

 

[TGT]

I hope it doesn't seem like i'm stealing this thread, I figured the questions I am going to ask pertain to this thread and will probably help out Changegmai also. If i'm being out of line please let me know.

Skeletor, I am going to be building a garage grow room and was wondering if you get any smell coming from the AC when it is on recirculate? And, do ALL new AC systems come with the recirculate feature or will I have to shop around? My garage is going to be split in two and the one room used for growing will be insulated top to bottom, and the air conditioner will be exausted into the other side of the garage. This way no one will see the AC unit being used and I can still use my garage for parking my car.

Another thing that I am concerned about that I think Chaingmai already asked, if the room is sealed and no air enters or exits, is all I need to keep the plants healthy without fresh air is the addition of Co2? I will have fans to circulate the air already in the room and also other nessesities, but the difference between doing this grow and my usual grow is this will be an entirely sealed system.

Thank in advance for any help. I have read in the past you have a lot of experience with AC, so I thought you would be the perfect person to ask.

TGT

 

[mrwags]

Unless you got a meter to determine the proper burn time you might be wasting your gas and over shooting the 1500ppm. you can go here and plug in the dimensions of your room:


http://www.greenair.com/co2-generator.htm

All I'm saying is to run the tank for 45 minutes at a time your gonna go through a hell of a lot of tanks and they are not as easy to fill as the tanks for the grills and depending on the size of your room like I said it might be overkill.?

I run my generator for 22 minutes every 4 hours but a monitor will be under the tree this year.









Good Luck Man The Gas Is Fast
Mr.Wags

 

[killabrown420]

chain, what cfh setting do you have your flowmeter set to, assuming you have a flowmeter w/ that setup. I use a hydrofarm set at 1cfh in my 3x4x6 box for 4 minutes every 4 hours during lights on. My 20# tank lasts about 30 days. The biggest problem I've encountered using a sealed room is the humidity and odor. My carbon filter is running all the time and it still doesn't catch all the smell. I think a vaportek or ozone inside my box would help kill any remaining odors.

 

[Guest]

Hey TGT no my window unit does not throw out any odor whatsoever,if it did I would be in deep shit my front yard would reek lol.Most all window AC units recirculate the air and come built that way,some units have a "fresh air vent" that you can open but obviously if you get one that does.keep it closed lol!Also I've been growing with co2 about 5 years now man with zero fresh air coming in day or night,all you need is co2 during the light hours and nothing at all during dark hours.I have a small fart fan in the ceiling I used to run during dark hours but the smell would go up into my attic and out the eaves,not too smart.I've never had any fresh air coming in,I do leave my AC running 24/7 although thats just recirculated air.You'll do great man just having co2 during light hours,the hardest thing for me was keeping temps high enough,it just went against the grain to have 85-90 degree temps during flowering.That is until I saw the results as I raised the temps,you'll have to feed twice as much also

 

[Reg Dunlop]

Heh Skeletor,

I read your other thread about portable a/c units,now not that I don't beleive you but,would not a portable a/c unit not recirculate the air aswell.If portable untits eat up co2,where does it go?It doesn't get sent outside the the grow room.What about dehumidifiers,do they eat co2 aswell?I'm really glad that I read your thread but I'm confused as to why why it happens and where it goes?Thanks for the info.


Reg,

 

[mrwags]

Portable a/c (single hose type) have an exhaust tube to blow out the heat from the compressor and that is where the gas goes. I cannot say anything for the dual hosed ones but have heard from some growers that they do the same thing and besides the damn things are expensive UNLESS anybody wanna but a slightly used 12,000 btu portable. lol



Mr.Wags

 

[Guest]

Reg a single hose portable AC has an exhaust hose that normally goes into the attic,thats where the co2 goes.The theory on OG was if you got a dual hose(intake and exhaust hose) and put the intake through a hole in the wall to another room,it wouldnt interfere with your co2.Thats a bunch of bunk too.I dont know how and I dont really care because the dual hose made sense,all I know is I did a half dozen tests with and without the portable,and it was crystal clear that the dual hose was no good with co2 enrichment either.So to answer your question,in each case single or dual the exhaust normally goes into the attic I couldnt think of anywhere else it could go

 

[chaingmai]

Mr. Wags that’s an awesome room you built there, very clean work brudda.

Kilabrown: I set my cfh at like .2 but I run mine way more than you. I run it for 45 minutes every hour during lights on. My room is also bigger than your cab though. I did the calculations based on square footage (Instructions to do so came with the unit) and then bumped it up a little because my room is not 100 percent airtight. My tank runs out after about a week and a half. Also I am only running my carbon filter 15 minutes out of every hour, when the gas comes on it shuts off and a baffle closes the vent hole. I will probably have to run the filter more later in flowering due to smell. This is my first run with Co2 and I am curious to see the advantages.

Thanx to everyone for the help and intrest

 

[Reg Dunlop]

Skeletor and Mr Wags,

Thanks,I never really looked into portables to much,inactuality This will be my first run with a sealed room.The only reason I was going to use a portable was cuz I wanted to build a room in a room,and keep a solid 2.5ft seperation from exterior walls,and with a window unit,that won't be possible.Do you guys have any Ideas? Was thinking about swamp fans but they'll only cool down as much as your water is cool,not good in summer time!


Reg,

 

[Guest]

By the way,I use a 45 pint dehumidifier too and no it has no effect on co2 lol,there is no exhaust hose coming from it to the attic ha ha.If you're going to have a sealed room with co2 I highly suggest you use a dehumidifier at least during the dark hours when your RH will rise 20-30% or you'll have dew on your buds when the lights come on.I pull slightly over 2 gallons of water daily from an 8 by 8 room.If you can get away with it heatwise run the dehumid 24/7

 

[Guest]

Skeletor.....

Skeletor.....

Have you tested the water that comes from the dehumidifier? I have water issues..... to little pressure for R/O so left with buying large quantities of bottled distilled. Was thinking I may be able to salvage some of the water this way and reuse. Just a thought.

Peace

 

[Reg Dunlop]

Bree
The water that I get from my dehumidifier is nearly 0 ppms,and I usually use it.

 

[Guest]

Yea its great water,just clean with bleach once in awhile they tend to get moldy if you dont

 

[Guest]

Come across the best things on these threads.....

Come across the best things on these threads.....

I bet I could really save the water that way. I vent into a room to treat the air before expelling. I will just set up a dehumidifier in there and try to get back as much of the water the plants don't turn into matter. The cost of the water is not the problem, it is the constant store trips with large water purchases. Rotate stores, but only one chain carries 0 EC distilled water. Tested everything in town but nothing close to Walmart distilled. Love the hunting seasons, put on some camo shirt and hat and no one thinks twice. Other times of the season isn't as good.

Thanks guys.

Peace