DIY: Home Made CO2 Guide

Great idea, thanks!

I am using a 1 liter rabbit water bottle. I just dremmled the top of the nozzle to get the ballbearing out and just turned it right side up into the holder for it,(which I have hooked up in my grow box) and..walla!

I had been planning on posting this for a while... I know it can be a bit of a pain in the ass to do as far as measuring the 1 liter but 1 liter = 4.2 cups. Just do right below 4 1/4 and it is perfect. Thanks for this ninja. I have 5 in my flower room and you can check it out. They are loving it... Wish I could +rep ya again haha.

cool i see many possibilities it kinda reminds me of making pruno you could upsize as long as you keep ratios of ingredients the same you could also attatch discharge hose to valve & locate container in convieniant spot & if u watch for bubbles in valve you could tell when to recharge im a diy kinda guy any way

horribleherk said:

cool i see many possibilities it kinda reminds me of making pruno you could upsize as long as you keep ratios of ingredients the same you could also attatch discharge hose to valve & locate container in convieniant spot & if u watch for bubbles in valve you could tell when to recharge im a diy kinda guy any way

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I get my yeast in bulk at Winco the grocery store and I just replace my generators every week and their good and work great.

Well I was going to edit my last post but I guess I can't haha. Here is the set up I have for my flower room. VERY SOON TO CHANGE TO NO IN NO OUT and I'm excited as hell lol.

Here are some pics of my set up. I posted these in my thread but felt these had place here as well. Ninja if you want me to remove them let me know asap and I will


In picture 1 the bottles are in a cabinet outside of the flower room and are fed through the wall. In picture 2 you can see the tubes sticking through the cabinet out the wall right above the fan that blows the Co2 upward to above the plants. It may not be as effective as last time but it works. The third picture at the top you can see my exhaust fan made from an old desk fan modified to fit onto a 4" metal ducting and out through a 3" pvc pipe through the wall into the cabinet shown in picture 4. In the 4th picture you can see the jug I use for the veg room which I will be adding many more because my veg room isn't exhausting but into the walkway but then circulates back into the veg room so if I add more into my veg room the ppm in the room should be significantly high and should up the growth by -roughly figuring- 200% using 8 bottles.

I use the yeast and sugar method as well. I tired it in a gallon milk jug and doubled the recipe but it didnt seem to work as long or as well as sticking to the single dose in a 2 liter.

A lot cheaper than any other methods of generated CO2.

At one point I had my garden in a space about 70 square feet and I had three bottles going, two pretty fresh and a third getting ready to be replaced. I measured my CO2 with the syringe type tester and found my levels up to 2000 ppm. The plants loved it. Make sure you check your levels with one bottle before adding more. The syringe type tester cost about 20 bucks, for about two tests, then you just buy the refill tubes at like 3 or 4 buck a pop. Gotta make sure not to waste them but you cant go wrong being able to test and knowing what you are actually providing your plants.

This setup is cool i've been planning to build one for my closet grow. For all the people having trouble finding that valve i found this tutorial with a similar system using 2 1 gallon jugs and no valve. Havnt tried it yet but looks to be the same idea.

Civil.Dis0bedience said:

This setup is cool i've been planning to build one for my closet grow. For all the people having trouble finding that valve i found this tutorial with a similar system using 2 1 gallon jugs and no valve. Havnt tried it yet but looks to be the same idea.

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Last pic...

Civil.Dis0bedience said:

Last pic...

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This method does work but if you use a larger jug or poke holes elsewhere other than the lid you can insert oxygen tubes into it for a multiple input and use a single outlet to feed into a fan with a moderately high ppm outlet. I have tried this but after a few times of doing this just check them by shaking the bottles and a glass of water to dip the hoses into. You can get the oxygen tubes I'm talking about from walmart near the fish section near the air pumps or online. I found 50' for like $20usd. Forgot to mention to use silicone caulking around all the areas where you have tubes going in or it wont work because of leaks.

what about adding air stones to a sealed bottle with the hoses around the plant...

bruntyman said:

what about adding air stones to a sealed bottle with the hoses around the plant...

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i wonder if we can find someone on the site that has a co2 meter.
if they would use it to measure the output per 2 litter bottle. this way people can make rough guestimates how many bottles they need to reach roughly 1500 ppm

newbiebob said:

i wonder if we can find someone on the site that has a co2 meter.
if they would use it to measure the output per 2 litter bottle. this way people can make rough guestimates how many bottles they need to reach roughly 1500 ppm

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Joker209 said:

It adds 200ppm into your room so if you do the math on it :

1500ppm is the best growing condition for cannabis plants. Regular air has 300ppm on average.

1500 - 300 = 1200ppm deficiency without bottles.

6 bottles of this mixture will be close to buying the system that would regularly cost some money to get set up and have 1200ppm added to your room.

1500ppm gives your plants a 250+% growth boost, so 1200ppm would be a 160% increase in plant growth so therefore 1200 / 200 = 6 bottles and 160% / 6 = 26% per bottle.

Each bottle you introduce into your room is a 26%+ increase in plant growth. 4 bottles doubles yield if my calculations are correct.

I change out my bottles every week to keep it to optimal emissions every day but they would last for 2 weeks decreasing slowly until completely out. Hope this helps..

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This was back on page 30 I believe it was. Hope it helps

newbiebob said:

i wonder if we can find someone on the site that has a co2 meter.
if they would use it to measure the output per 2 litter bottle. this way people can make rough guestimates how many bottles they need to reach roughly 1500 ppm

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I have used a glass co2 meter in my 3'x4'x7' semi-sealed space. The only fans I use are two low powered duct fans for intake and out take, turning on/off every 30 mins. I use three bottles with home made bubblers. I have approx 1700, everywhere I have checked around my plants, ( two times over two weeks, in the middle of the cycle) but I use a different mixture. 2 liters purified water with two cups of sugar and 30 mgs of yeast (two tbs). I also change them out every five days. For the first few days after a new mix they are always standing at full attention.
It is very easy to mix up all three bottles at once in just thirty mins. I also use a tbs of molasses per 2 ltr, for food, and also for color so I can tell if any "Hooch" ends up in my bubblers, which would eventually travel down the tubes and around my plants... bad. Use a thermometer to check the water temp. 115 is optimal for most good yeast. Sprinkle the yeast on top of the water and let it sit 15 mins then mix the foam in the water and your off.

When I get more space Im going to actually make wine. I used champagne yeast one cycle with a can of grape juice concentrate and let that bottle go ten days then drank it. It was actually drinkable

The glass meters come with a big srynge to suck up the air, then you crack both ends of the glass, and blow the air you collected through it. The kit is around twenty bucks and has two glass meters. Extra meters are five bucks a piece.

Hope this helps

Marimaschiac

Just sit in the room and breath for awhile and bam u got co2

Cpl. CornB33F said:

Just sit in the room and breath for awhile and bam u got co2

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Only problem with this is most growers can't spend all their time in their grow room and the average human body only emits 400 ppm Co2 upon exhale. I will look that figure up and make an adjustment after I look.

"you exhale 40000 parts per million (ppm) of CO2" Little bit more than I had expected. lol

Hope this is ok to post. If not Ninja just let me know and I will erase it.

Now what humans exhale (CO2) is labeled a health hazard by the EPA?
Did you know that you exhale 40,000 parts per million (ppm) of CO2 with every breath?
As humans emit CO2 when we breathe, it is illogical to assert that CO2 is a direct health hazard. Nonetheless, CO2 has been unjustly vilified and is currently under review by the EPA for an "Endangerment Finding" that CO2 is hazard to humanity. Judicial review has found that the EPA could consider CO2 as a pollutant. CO2 has been identified as a cause of global warming and legislation has been proposed to raise taxes, raise consumer energy prices, and, in theory, to reduce CO2 emissions.
Most of the early scientific studies that have led to the Supreme Court rulings, and EPA Endangerment Finding, have not given accurate account of the 18 climate drivers that are responsible for global warming. Indeed, the sun's effect has been mandated to be held constant whereas there are many observations that the sun's effects are variable. Since CO2 is only 0.0385% of the Earth's atmosphere and modern science indicates it has a very small impact on global warming - other factors are much more important. Source: PlantsNeedCO2.org
It is hard to justify the importance that CO2 has been given in the global warming debate.

Eliminate CO2 and human life ceases to exist
CO2 is necessary to plant and animal life on Earth. Unfortunately, the positive effects of CO2 in our atmosphere have not been given proper consideration within the legislative, judicial, and regulatory proceedings. Plant photosynthesis processes use CO2 for growth and create oxygen. More CO2 in the atmosphere will increase plant growth as thousands of controlled greenhouse research records prove. These same studies prove that most plants do not grow at CO2 concentration of less than 150 ppm. They further demonstrate that a rise in CO2 levels from 280 ppm to 385 ppm has increased average plant growth and required less water consumption to accomplish that growth. Source: PlantsNeedCO2.org


Is CO2 a Pollutant?
[FONT=Arial, Helvetica, sans-serif]Of all the myths quoted, calling carbon dioxide a pollutant is the worst - it's simply is not true! Myth: [FONT=Arial, Helvetica, sans-serif]CO2 is a pollutant. [/FONT][FONT=Arial, Helvetica, sans-serif]Fact: Totally false. We challenge you to prove otherwise. CO2 is in our every breath, in the carbonated sodas and waters that we drink and in the dry ice that helps us keep our food cold and safe. We breathe in 385 parts per million and then exhale 40,000 parts per million with no ill effects. [/FONT][FONT=Arial, Helvetica, sans-serif]We breathe the 40,000 ppm into victims needing CPR and it does not cause them to die! [/FONT][FONT=Arial, Helvetica, sans-serif]The monitoring systems in U.S. submarines do not provide an alert until CO2 levels reach 8,000 ppm which is higher that natural CO2 levels have been on Earth in the last 540 million years. [/FONT][FONT=Arial, Helvetica, sans-serif]CO2 is a great airborne fertilizer which, as its concentrations rise, causes additional plant growth and causes plants to need less water. Without CO2 there would be no life (food) on Earth. The 100 ppm of CO2 added to the atmosphere since the start of the industrial revolution has caused an average increase in worldwide plant growth of 12 percent and of 18 percent for trees. Source: PlantsNeedCO2.org[/FONT][/FONT]

so how many ppm do you need to grow plants?

Cpl. CornB33F said:

so how many ppm do you need to grow plants?

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To grow plants you only need 300ppm but to grow massive plants and grow them well you will want to grow with 1400-1700ppm in the room. At 1500ppm your plant growth will be 250% more than the average growth, as marijuana plants exchange air very rapidly turning Co2 (ppm) into O2 (oxygen) thus depleting the amount of usable Co2 (ppm) in the exchanged air.

OK... my box is small... like 5 cubic ft small... even in a tiny box like that, where I'm doing a full exchange of air multiple times per minute, is any additional co2 staying in the box? Are you guys running closed rooms with A/C and a couple of soda bottles on the floor? I'm not sure I understand how this would ever work outside of a sealed room. In a sealed room, it seems like a few of these could actually do the trick, but as rapid as you have to exchange air on a vented box/room how on earth could this work? I'd love to believe it could, but logic tells me no if 5 times every minute I'm replacing all the air in my box. Has anyone done a side-by-side/samsie-samsie on this?

Now that being said, I flower my males in my main flower cabinet with the ladies. To avoid him knockin' up the ladies, I seal him up in a plastic container with a small fan and filters on intake and exhaust to get him fresh air. using a little co2 gen like this would probably be awesome for that, and would allow me to go without a fan and the little valve you guys use would work to filter pollen from the exhaust. But as a CO2 system for a vented room, or even a tiny cabinet like mine, sounds hard for me to believe!

Not trying to be a dick here but when the one guy did the math on this he wasn't taking into account air exchange, nor was the guy who set it up in his bathroom with the ppm meter...

Jed

Ok so does it work or not? I dont want to do something fancy if i dont have too.