Cheap + Easy C02.

Corbat420

Corbat420

Well-Known Member
over the past week i have seen ALOT of people looking for cheap and easy ways to produce C02 in their grow rooms. well, im here to show you the cheapest, easiest, and most natural way i have found for C02 production.

Yeast: most people dont know it, but yeast is actualy a bacterial culture, that can in certain situations be harmful. Yeast feeds on sugars and produces carbon dioxide as a by-product.

So now, the technique: take a Large (2L) bottle and fill it with warm (not hot) water, add 1tsp of sugar per liter of water you use, add a PINCH of yeast (with yeast, a little goes a long way). stir it all up so that everything is totaly absorbed by the water. Put the uncapped bottle into your grow room and it will produce C02 as long as there is yeast and suger in the water.

personaly i leave my bottle in the room for the full grow (unless it goes bad or rotten), clean it with the room before the next grow. ive never had one that stops producing C02. they have produced for upwards of 5 months for me.

a bad or rotten bottle will have black spots in it. this is black mold. one of the worst, and deadliest molds on the face of the planet. if you see black spots developing, throw the bottle away.


I know it works for rooms up-to 5x5x8(my current size), but i dont know for anything larger.


i hope this help :D


i only take credit for the writing of this thread, not the creation of such a technique.
 
The2TimEr

The2TimEr

Well-Known Member
Corbat420 said:
over the past week i have seen ALOT of people looking for cheap and easy ways to produce C02 in their grow rooms. well, im here to show you the cheapest, easiest, and most natural way i have found for C02 production.

Yeast: most people dont know it, but yeast is actualy a bacterial culture, that can in certain situations be harmful. Yeast feeds on sugars and produces carbon dioxide as a by-product.

So now, the technique: take a Large (2L) bottle and fill it with warm (not hot) water, add 1tsp of sugar per liter of water you use, add a PINCH of yeast (with yeast, a little goes a long way). stir it all up so that everything is totaly absorbed by the water. Put the uncapped bottle into your grow room and it will produce C02 as long as there is yeast and suger in the water.

personaly i leave my bottle in the room for the full grow (unless it goes bad or rotten), clean it with the room before the next grow. ive never had one that stops producing C02. they have produced for upwards of 5 months for me.

a bad or rotten bottle will have black spots in it. this is black mold. one of the worst, and deadliest molds on the face of the planet. if you see black spots developing, throw the bottle away.


I know it works for rooms up-to 5x5x8(my current size), but i dont know for anything larger.


i hope this help :D


i only take credit for the writing of this thread, not the creation of such a technique.
Click to expand...
Il give this a try, but arnt you supposed to drill a few small holes in the bottle cap then give it a wee shake for a boost?
 
grow space

grow space

Well-Known Member
yea, I v heard this thing before, one of my mates uses this.
Maybe Il give it a try too??!!
to you add yeast after every 3 days or once a week??
 
The2TimEr

The2TimEr

Well-Known Member
grow space said:
yea, I v heard this thing before, one of my mates uses this.
Maybe Il give it a try too??!!
to you add yeast after every 3 days or once a week??
Click to expand...
I think it can go for longer than that, but im not sure either when it would stop producing the co2?
 
Corbat420

Corbat420

Well-Known Member
The2TimEr said:
I think it can go for longer than that, but im not sure either when it would stop producing the co2?
Click to expand...

when all of the yeast in the bottle die. even when the sugar is "gone" the bacteria will still feed on the other weaker bacteria (which are made from sugars). after this process is complete it will stop producing C02. This process usualy takes about a month, but the lifespan of average yeast is a week.

basically, once a month.


as for small holes in the cap, i dont even put a cap on. i've had bad experiences with bottles under pressure, and a continual release of C02 into a sealed bottle will continualy raise the pressure.
in short, i dont put the caps on the bottles, so the C02 can freely flow into the room.

giving it a shake does boost the C02, i only shake it duering flowering.



Edit: sorry for the absence, im doing growroom construction today :D
 
Realclosetgreenz

Realclosetgreenz

Well-Known Member
Co2 produced by fermentation is only suitable for small grows.Dry ice is what Ive found to be the best cheapest way to produce large amounts of C02 for larger grows. just drop some dry ice in a bucket of water.
 
I

iwannasmokeit

Member
Great idea. I also saw this one High Times "ready - set - grow" film clips. I heard this only works in smaller rooms, closets, etc.
 
Realclosetgreenz

Realclosetgreenz

Well-Known Member
The2TimEr said:
Dry ice ??? lol never heard of it !
Click to expand...
An old school grower pointed me in this direction,dry ice is Frozen CO2 when you put it in water it goes straight to a gas form. I use rubber maid containers with hole in the tops of the lids to slow and spread the C02 Production.
 
The2TimEr

The2TimEr

Well-Known Member
Realclosetgreenz said:
An old school grower pointed me in this direction,dry ice is Frozen CO2 when you put it in water it goes straight to a gas form. I use rubber maid containers with hole in the tops of the lids to slow and spread the C02 Production.
Click to expand...
Thanks for the info R.C.G!
What size container would you recommend for a cupboard that is 2x4x8 ft ?
 
J

johnd0e69

Member
thanks for the advice guys, really helpful. But for the DRY ICE, how long would it last n what's the recommended amount? thanks
 
J

john84

Active Member
I have a 2x2X5 grow tent that I'm venting with a small inline fan, is there any benefit to using the Co2 in the tent or will it all be sucked out by the fan?
 
Corbat420

Corbat420

Well-Known Member
john84 said:
I have a 2x2X5 grow tent that I'm venting with a small inline fan, is there any benefit to using the Co2 in the tent or will it all be sucked out by the fan?
Click to expand...
it depends if ther is a posative or negative air pressure in your room. if it has a stronger exause fan than intake fan then it has a -air pressure. it is has more intake than exause it has +air pressure. with +air pressure there is a build up of air and C02 in the room/tent, then it has a benificial effect.
 
Realclosetgreenz

Realclosetgreenz

Well-Known Member
I always reduce my intake and outtake about 75% when C02 enriching. Always use shallow Tupperware containers with lids. Dry ice lasts about 20-45 minutes.
 
Stoneshield

Stoneshield

Active Member
Corbat420 said:
over the past week i have seen ALOT of people looking for cheap and easy ways to produce C02 in their grow rooms. well, im here to show you the cheapest, easiest, and most natural way i have found for C02 production.

Yeast: most people dont know it, but yeast is actualy a bacterial culture, that can in certain situations be harmful. Yeast feeds on sugars and produces carbon dioxide as a by-product.

So now, the technique: take a Large (2L) bottle and fill it with warm (not hot) water, add 1tsp of sugar per liter of water you use, add a PINCH of yeast (with yeast, a little goes a long way). stir it all up so that everything is totaly absorbed by the water. Put the uncapped bottle into your grow room and it will produce C02 as long as there is yeast and suger in the water.

personaly i leave my bottle in the room for the full grow (unless it goes bad or rotten), clean it with the room before the next grow. ive never had one that stops producing C02. they have produced for upwards of 5 months for me.

a bad or rotten bottle will have black spots in it. this is black mold. one of the worst, and deadliest molds on the face of the planet. if you see black spots developing, throw the bottle away.


I know it works for rooms up-to 5x5x8(my current size), but i dont know for anything larger.


i hope this help :D


i only take credit for the writing of this thread, not the creation of such a technique.
Click to expand...
just cause the mold is black dont make it the deadly black mold that youve seen on TV. that strain of mold is auctually quite rare (usually only grown in places of extream filth and moisture). but yes. black spots in ur mix is def not good. are you sure it wasnt fruit/fungas flyes?
 
Corbat420

Corbat420

Well-Known Member
just cause the mold is black dont make it the deadly black mold that youve seen on TV. that strain of mold is auctually quite rare (usually only grown in places of extream filth and moisture). but yes. black spots in ur mix is def not good. are you sure it wasnt fruit/fungas flyes?
Click to expand...
that "rare" black mold isen't so rare if you add the right ingredients. we get the deadly kind up here all the time, due to moisture leaking into the walls of the house, because of snow build-up on the roof. after the insilation is soaked (with bacteria filled snow water....) it just takes a matter of time for black mold to set in. and its not as bad as they say on TV and shit, nothing realy ever is........
 
Integra21

Integra21

Well-Known Member
Personally, i have used dry ice differently and with good results. I took a small plastic lunch cooler, drilled a hold and put a 3/8" tube in. Had just enough room for 4 blocks of dry ice from the store down the street($20 worth). Stacked them vertically on top of each other like a deck of cards(makes it melt slower) and closed the lid. It would generally last 5-7 days depending on grow room temps and enriched my room to the point of noticeable faster plant growth and much bigger fan leaves(was during veg). My grow room measures 4ftx4ftx3.5ft.
Here's the pics: The first one is my 3 White Widow Seedlings at 3 weeks old.

This one is at 5 weeks old:

And the next at 6 weeks old. They are about 18 inches tall in 4 gallon pots.
 
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