Does Co2 increase yield?

[Itslikeyousaid]

Morning All,

Might be a stupid question but does Co2 actually increase flowering?

I understand its very good for growth, but Im only giving my cuttings a week or so in veg as they will be a decent size coming out of my cutting tent and im fairly limited with height.

So im just wondering if I invested in a bottled Co2 setup up would it help me at all?

Cheers

[wert]

co2 will increas your yield,using it in a small indoor grow with extraction is not easy.
you need to have everything else dialled in correctly in your grow room to see any benefit.

[scooby1doo1]

I would say Co2 probably would increase overall yield, As growers we often overlook Co2, I mean we have the best lights, the best nutrients, but we neglect the fact, that for a plant to fully photosynthesize It needs to combine all 3.

See the link for the equation:

photosynthesis equation

[Heath's Deciple]

just read up on the amazon basin or rain forrests, exciteing stuff...

[cocogrower]

Like Wert says, Using c02 will improve your yields (upto30% in my experience) but your Enviroment in your room/tent has to be bangon.. Spend at least £200 on a good fan/c02 controller and read a lot for good results

[Itslikeyousaid]

Cheers Guys, when I got some pennies I might invest!!

[Itslikeyousaid]

Like Wert says, Using c02 will improve your yields (upto30% in my experience) but your Enviroment in your room/tent has to be bangon.. Spend at least £200 on a good fan/c02 controller and read a lot for good results

Thanks Mate, I have a SMS Com fan controller that works well for me, I've just added a fan heater on a thermostatic plug to sort out my lows as well, so all in all my enviroment is pretty good.

Can you recommend any Co2 controllers to go with this setup? How would it work, do the fans go off on a timer as the Co2 is pumped in? (confused!)

Cheers

[Sonofdust]

Whats the size of your grow tent and how is it set up? fans,vents, lighting.

[Itslikeyousaid]

2 x 1.2m x 0.6m x 1.6 m tents (awkward shape room!)
1 x 6" fan pulling through a splitter and a 5" Filter in each.
1 4" split feeding each
1 x 400 dual hps in each
1 x sms com controller
2 x autopots in each.

Cheers

[dubc02]

wow..this is and old thread...but still want to ask if i put yeast sugar and water together and have it slowly releasing c02..what would be so difficult?

[lhhip]

Yes, it would produce some CO2, but not enough to make a difference.
You need to significantly raise the CO2 concentration and maintain it, which is a bugger cos you also need to ventilate the space for heat, but the advantage is you don't need to worry too much about venting for CO2. An effective setup needs air cooled enclosed lights so room temps are minimised, lower room ventilation right down, and use a proper CO2 setup that maintains a set ppm. It is expensive, tricky to get right, and if it goes wrong it can kill you with no warning. DIY is not recommended.
If you have a large (commercial) setup then the payback may make sense - they use them more and more in commercial glass Houses, especially if the CO2 can come from a commercial generator or other source where it counts as carbon capture.

[Degenerate]

The lads growing with LED's should be able to use CO2 with ease, not at all the same type of heat to extract which means they could get a very CO2 enriched environment.
Anyone care to experiment some?

[Stirruphead]

Ozgrower was into adding CO2 to his grow, I believe; using the gas output from homebrewing, not unnaturally, him being Australian and all. I'd like to have a crack at it myself, but I think it's a bit advanced for me right now.

[jimmi420]

wow..this is and old thread...but still want to ask if i put yeast sugar and water together and have it slowly releasing c02..what would be so difficult?

It wouldn`t be difficult to do, but it would be a waste of time and money.

[dubc02]

So the yield increases are minimal for small grows? Im planning on growing 4 plants under 2 123w cfls...so heat shouldnt be a huge issue.
Does anyone have any info on c02 vs no c02 yields?

[jimmi420]

The homemade co2 jobby would do naff all. Waist of money, but added co2 will increase yield, but its a balancing act dialling in the rest of your enviroment to work with it.

[Shinigami]

I was pondering using CO2 in a tent.

This is what i would do, since using CO2, i don't really want extraction, as this would just get rid of the co2 before it would be able to be used.

In a 1.2 x 1.2m tent, i would have 2X 600W lights, in a daisy chain cool tube, or seperate.

then close up all the vents, and other holes etc, and seal with duct tape.

set up an extractor fan towards the top of the tent, set up an extractor fan, attatched to a carbon filter, which will be positioned on the floor stood up, with no ducting, so it's just circulating air through it, pulling through the filter, towards the top of the tent (helps mix the co2 around, since without movement co2 sits at the bottom) but not extracting, or intaking from, or to outside.

And during flower keep it at 1400ppm or around that, this should give a massive increase on yields, since the grow room is pretty much sealed, obviously you will want an oil filled radiator, in the tent (incase of low tents) and a high extraction taking through the cool tubes, so very little heat gets into the tent.


Jobs a good'un

[dubc02]

Yup..ill keep that in mind jimmy420.

[Brutalkillshot5]

If your getting high temps 35/40+ degrees its best to use some of co2 delivery system as it helps the plant handle the heat better plus it "can" help increase yields .

[dubc02]

Do u think dropping in a few cubes of dry ice every few days would b ok?