Simple Fermentation DIY, CO2 producing setup

So yeah, I just finished making my Homemade CO2 Setup and so far It is looking SHWEEET! I am using the fermentation method and it looks like it works great! I made a bubbler for the tops of the bottles to prevent bacteria from getting into there and see results, then from the 2L bottle the 5mm tubing runs gingerly around the plants for optimal use of the CO2...
I Got PiCS of everything and the final setup here in the album.
Stuff that you need...
- 2L pop bottle +2caps
- 3" of 1 1/4" Clear Vinyl Tubing (something with a bit of stretch)
- 1.5m of 5mm tubing
- 15ml Yeast (I used dry baker’s yeast but apparently Champaign yeast is the best)/ 480ml Sugar/ 2L Water[FONT=&quot]
- drill with bits
- epoxy (waterproof)

To make the Bubbler on top:
-cut the 1 1/4" tubing to about 2.5" in length.
-Drill 5-6 super tiny holes (1/32" - 1/16") through one cap and one 5mm or 7/32" hole through the other, clean them all out and set aside.
-Soak the Tube in boiling water for 2-3 minutes, so it will have a little stretch to fit around the bottle caps.
-Push the bottle caps into the tube and stretch the tube around until flush with the bottom of the base of the cap.
-Let harden for couple hrs...
-Fin. Set aside...

To Make the Fermentation Mixture:[/FONT]
[FONT=&quot]-[/FONT][FONT=&quot]Warm the 2l in a pot on the stove and dissolve the 480ml sugar, stirring constantly, as soon as all of the sugar is dissolved take it off the heat. Stick a thermometer in the sugar-water solution and let it cool to [/FONT]38°[FONT=&quot] C, this is the optimal temperature for yeast to activate, too hot will kill the yeast![/FONT]
[FONT=&quot]-[/FONT][FONT=&quot]Add the 15ml of yeast, stirring constantly, until it mostly looks dissolved.[/FONT]
[FONT=&quot]-[/FONT][FONT=&quot]Let the mixture activate for half-hour to an hour before poured into the bottle.[/FONT]

[FONT=&quot]Clean up a pop bottle with soap and water, bleach if you really want and make sure it is really well rinsed out. Add the fermentation solution to your newly cleaned out pop bottle almost to the top, probably 1.8L total, fill the bubbler from the bigger holed side and quickly screw it on to the top of the 2L without squeezing the bottle (it will suck all of the water out of your bubbler) you should notice small bubbles start to come through, that is the CO2, stick your 5mm hose through the hole, not into the water, just above the surface of the water; and wrap the other end (poked with small holes) around your plants. Now you have CO2! CHEAP![/FONT]
[FONT=&quot]***This Solution will last about 1week at optimal production, after that you can choose to either add more sugar to keep the yeast going or replace the fermentation mixture; if no more bubbles appear after the sugar has been added a second time then the yeast has been killed by the by-product of the co2 production, alcohol. [/FONT]
[FONT=&quot]***THE FIRST MIXTURE does not need to be re-warmed for the addition of extra sugar![/FONT]

thanx bro 4 a great post.
keep up the good work...

Nice work, looks almost professional! +rep

Thanks for posting a pic with it too!

Adding a Second Bottle, after that, you can add as many as you need


The Bubblers for the top


All the stuff to make the Fermentation mixture and some mixture cooling down.


My Little 1wk old plants with my co2 setup running gingerly around them, so happy!


The Bubbler Unit.


All the non-perishable supplies.


All these pics are also in the album! Cheers!

this has inspired me to build one. with only what i have at my house here. Ill post pic when im done.

KonKRETE said:

this has inspired me to build one. with only what i have at my house here. Ill post pic when im done.

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Awesome! Look forward to the inspired pics! Cheers mang!

khordes said:

Well... In photosynthesis, the manufacturing of "food" (carbohydrates) is done with Water, Light energy, co2 and Chlorophyll. Chlorophyll(the plant materia that gives the plant its green color) converts co2, water, and light energy into carbohydrates and oxygen(for us!)

SO... According to how all plants actually work... the benifits would be more "food" for the plants with a higher concentration of co2!
The carbohytdrates are used in all funtions of the plant including stem, leaf, flower and root growth.
SO... It would make better buds, healthier plants and overall better quality.

Cheers!

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That's half the story. For co2 to make a marked increase in the rate of photosynthesis, other factors (light, water, nutrients etc) have to be at near optimum levels.
If the plant isn't getting enough light, or food, or it's too cold, then adding co2 is unlikely to improve the situation.
Other than that small omission, spot on!

sweet post!! thanks on a budget this will help!!

Thought I would add my version. I used a recipe of 6cups of water, 3/4cups of sugar, 1/4tsp of yeast. This system is a 2x 1-gal system that separates the co2 inside a 1 gal, and dual output to two nasal cannulas.

So easy and simple, I'm fer sher gonna make a couple of them for my closet grow.

Off to Home Depot for supplies. Would they have the clear vinyl tubing there? I'd be nice to only have drive to one place.

Grow on
-Nic

Made a couple of these bad boys and threw them into the room yesterday and hooked them to some tubing that is draped on top and around my CFL's. Here are some pics.

Grow on
-Nic

nic949 said:

Made a couple of these bad boys and threw them into the room yesterday and hooked them to some tubing that is draped on top and around my CFL's. Here are some pics.

Grow on
-Nic

View attachment 459618View attachment 459619

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Nice, thats gorgeous! Keep on keepin on!

GREAT post. When you add the 2nd bottle would that make it last longer or just add more CO2?

Not trying to knock your idea or anything but I heard these dont work. I was really excited about trying these at 1st but after hearing they dont do much, I lost interest. I have an oscillating fan going 24/7, wont that just push the c02 out of my tent?

texashustle said:

Not trying to knock your idea or anything but I heard these dont work. I was really excited about trying these at 1st but after hearing they dont do much, I lost interest. I have an oscillating fan going 24/7, wont that just push the c02 out of my tent?

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I've been reading tons of these DIY fermentation-method CO2 generation threads and unfortunately I have yet to find a before and after ppm reading on a setup with adequate ventilation. I really want to find one.

Really, the problem is that most people who are in the market for a DIY fermentation system are running a micro to mini grow and hence probably have 1. 24/7 ventilation 2. a setup that is infeasible for a major CO2 setup 3. a tight budget 4. (hence) no $$ for a ppm meter. The people with a ppm meter have a tank CO2 system and thus are not making little fermentation vessels. It's a double-edged sword. maybe someday someone will do a real experiment to test this

nice when i first started i used one bottle like you with out the bubbler , then me always thinking ( not always a good thang lol) i started to make three 2l bottles then i stumbled opon a 5 gal barrel and needless to say i started to think even more and added an air pump ! i didn t post pics cause wife keeps deleting them but i did post a cheap drawing of my doing in the same forum called co2 generator im not trying to hyjack but nice too see that great minds do think alike i was wondering if your bubbler does anything for the smell ??? i have my 5 gal barrel out side my closet and smell through the house unless i close the door and open the window>.

i love it man + rep if you tell me
is the bubbler 1 and 1/4 inner diameter tube?

and are you shaking the bottle ?
or does the mix naturally go into the bubbler?