Adding Co2 - Please Help !

Ok so im about 3 weeks into flower and i want to hook up my co2 systrm but im a little stumped.
I have a regulater and a co2/temp&humidity controller, and a large tank of co2.
Currently my lights are not aircooled and i will need to hook that up very soon, as of right now my exhaust and intake fan come on every 4 minutes for about 50 seconds keeping my temps at 75.
But i was wondering how i would inject the co2 without wasteing it, im sure it takes 3 minutes alone to fill up the room. By then the fans are sucking it out. Im sure you guys have some ideas !!!

Hey FAB ! welcome back !


wait.. your not fab. Impostor

you will need to change the rate you exhaust the room. maybe exhaust every 30 mins. pumping co2 when it is not venting.

Hmm.. My temps might go out of wack. Its not ok to intake air while injecting with co2 is it? Unless i can incorporate it together .. Hmm the ole noggin is working on this one.

No because if you intake, you need exhaust.. which would push the co2 out of the room.. When you use co2, it is normally in a Sealed room w/ an AC.. which can easily cost 1k +

Yeah .. Maybe next year haha. If i intake thou i dont really HAVE to exhaust ?

Well, co2 would do you no good then.. Imagine your room sealed, with one way in, like a balloon.. cannot push fresh air in forever. without exhaust

I was just thinking hooking the co2 up to the intake duct and running it for preatty well 12 hrs except when exhausting every 30 mins.

budbuster3000 said:

Ok so im about 3 weeks into flower and i want to hook up my co2 systrm but im a little stumped.
I have a regulater and a co2/temp&humidity controller, and a large tank of co2.
Currently my lights are not aircooled and i will need to hook that up very soon, as of right now my exhaust and intake fan come on every 4 minutes for about 50 seconds keeping my temps at 75.
But i was wondering how i would inject the co2 without wasteing it, im sure it takes 3 minutes alone to fill up the room. By then the fans are sucking it out. Im sure you guys have some ideas !!!

Click to expand...

Save your $$, there is no documented evidence that carbon dioxide does anything.

Ya true .. Hmm back to the drawing board

Sunbiz1 said:

Save your $$, there is no documented evidence that carbon dioxide does anything.

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Some growers swear by it, i have never tried it myself. I had a bottle kicking around and bought a regulator. So i mise well atleast try it out

Wow I can't believe the miss information you got here I just had to jump in and let you know the truth!
First of all it is well documented co2 can boost growth rates by as much a 5x as with out!
Yield flowering time will all show benefits from co2 enrichment!
Now to help ya use it you are right you don't want to vent as often as you will waste co2 I would suggest only venting when temps get way to high!
HEAR IS ONE OF THE BIGGEST things to know plants optimum growing temp with co2 is higher than without they can comfortably run 80 to 90 degrees just like a plant without co2 running at 70 you could go as high as 100 but i would set it to vent around then or the high 90's!
So don't listen to those last posts do a little more reading about it and then watch in awh how you can see huge growth rates over night!!!!!!!!!!!!!

yes you can use Co2 in an "open loop" system BUT its not very efficent at all..Like everyone said you will be wasting most of it when your exhaust fan flips on it will quickly remove all that Co2......

You could also do like some have suggested and run your exhaust fan less with longer periods of it being off but that creates other problems like rising temps and higher humidity.....

In the end you really dont want to add Co2 unless you have all the other factors down 100% like Nutes,water,meduim,temp and atmospher once you have all that down like the back of your hand then its time to up the anti but if any of those other factors arent on point your better of putting energy into fixing those things first

Also Co2 supplement is best used in a SEALED or "closed" loop system there is NO intake and NO exhaust.... But for this to be practical you must have total control over the enviroment and to do this right you would need an A/c, heater and duhumidfiyer at very minimium...

Not to mention the Control panel and Co2 censor regulater. tank and then exchange price on the tanks that you would go through It would start to add up in price........

FootClan said:

yes you can use Co2 in an "open loop" system BUT its not very efficent at all..Like everyone said you will be wasting most of it when your exhaust fan flips on it will quickly remove all that Co2......

You could so like some have suggested and run your exhaust fan less with longer periods of it being off but that creates other problems like rising temps and higher humidity.....

In the end you really dont want to add Co2 unless you have all the other factors down 100% like Nutes,water,meduim,temp and atmospher once you have all that down like the back of your hand then its time to up the anti but if any of those other factors arent on point your better of putting energy into fixing those things first

Also Co2 supplement is best used in a SEALED or "closed" loop system there is NO intake and NO exhaust.... But for this to be pratical you must have control the envierment and to do this right you would need A/c,heater and duhumidfiyer at very minimium...

Not to mention the Control panel and Co2 censor regulater. tank and then exchange price on the tanks that you would go through It would start to add up in price........

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Good info here. <3

It is better to spend the extra $ and time on PERFECTING all other aspects before moving to co2.

big fatjoint said:

Wow I can't believe the miss information you got here I just had to jump in and let you know the truth!
First of all it is well documented co2 can boost growth rates by as much a 5x as with out!
Yield flowering time will all show benefits from co2 enrichment!
Now to help ya use it you are right you don't want to vent as often as you will waste co2 I would suggest only venting when temps get way to high!
HEAR IS ONE OF THE BIGGEST things to know plants optimum growing temp with co2 is higher than without they can comfortably run 80 to 90 degrees just like a plant without co2 running at 70 you could go as high as 100 but i would set it to vent around then or the high 90's!
So don't listen to those last posts do a little more reading about it and then watch in awh how you can see huge growth rates over night!!!!!!!!!!!!!

Click to expand...

i wouldnt run any room at 90 or 100 regardless of co2 concentration in the room 85 is about has high as i would go

big fatjoint said:

Wow I can't believe the miss information you got here I just had to jump in and let you know the truth!
First of all it is well documented co2 can boost growth rates by as much a 5x as with out!
Yield flowering time will all show benefits from co2 enrichment!
Now to help ya use it you are right you don't want to vent as often as you will waste co2 I would suggest only venting when temps get way to high!
HEAR IS ONE OF THE BIGGEST things to know plants optimum growing temp with co2 is higher than without they can comfortably run 80 to 90 degrees just like a plant without co2 running at 70 you could go as high as 100 but i would set it to vent around then or the high 90's!
So don't listen to those last posts do a little more reading about it and then watch in awh how you can see huge growth rates over night!!!!!!!!!!!!!

Click to expand...

Do you work for the local hydro store?. And where is your well-documented evidence that carbon dioxide can boost plants by up to 5 times.

http://www.sjsu.edu/faculty/watkins/CO2plants.htm

According to this study, it's 20-40% boost with 100% increase of C02.

Sunbiz1 said:

Save your $$, there is no documented evidence that carbon dioxide does anything.

Click to expand...

Sunbiz1 said:

...
http://www.sjsu.edu/faculty/watkins/CO2plants.htm
According to this study, it's 20-40% boost with 100% increase of C02.

Click to expand...

perhaps you should read that report again,

Now, after more than a century, and with the confirmation of thousands of scientific reports, CO2 gives the most remarkable response of all nutrients in plant bulk.....

Click to expand...

no documented evidence?

Sylvan Wittwer, quoted above, states that under most circumstances the availability of CO2 is the factor which limits growth. Thus with a higher level of CO2 in the air plants can grow faster with a higher temperature.

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....They found that enhanced CO2 increased growth by 31 percent in plants with adequate moisture but it increase growth by 62 percent for plants in moisture-stressed condition...

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...The effect of enhanced CO2 is even greater for plants grown under low light conditions. The enhance growth is greater than 100 percent for a 100 percent increase in CO2. This compares to less than 50 percent for plants grown in normal light conditions...The evidence that clinches the argument is that some greenhouse owner artificially elevate the CO2 level to triple what the level in the atmosphere is.

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and the above studies are only for increasing CO2 by 100%. in other words,going from about 300 ppm to 600 ppm. increase CO2 by 400% (say 1200ppm) and you could see even better than 100% increases in growth.
even at a conservative 30% increase,it sounds like a good return for you money.

Boom, that guy just got bitch slapped with knowledge. Anyway, if you're using a tent in a space bedroom or something, seal the bedroom and pipe the co2 in there. Now you have an "open" grow tent within a sealed environment.

budbuster3000 said:

Ok so im about 3 weeks into flower and i want to hook up my co2 systrm but im a little stumped.
I have a regulater and a co2/temp&humidity controller, and a large tank of co2.
Currently my lights are not aircooled and i will need to hook that up very soon, as of right now my exhaust and intake fan come on every 4 minutes for about 50 seconds keeping my temps at 75.
But i was wondering how i would inject the co2 without wasteing it, im sure it takes 3 minutes alone to fill up the room. By then the fans are sucking it out. Im sure you guys have some ideas !!!

Click to expand...

Dont exhaust or intake at lights on, problem solved. CO2 is only used at lights on.

FootClan said:

i wouldnt run any room at 90 or 100 regardless of co2 concentration in the room 85 is about has high as i would go

Click to expand...

This is also useful info.