Diy Co2 Generator Recipe

I read in an article by John LeVasseur a recipe for a DIY CO2 generator as follows,

For two-liter bottles:
•2 cupswater
•2 cups Sucrose(cane sugar)
•¼ teaspoonFleischmann's Active Dry Yeast
•¼ cuptepid (ideally 104ºF) water

My question is, should I be doubling or even tripling this recipe to fill a 2lt bottle most of the way up? in other posts I've read to fill bottle 2/3 full of water, add sugar and baking soda and then the rehydrated yeast. Which is a better formulae?

 

I read in an article by John LeVasseur a recipe for a DIY CO2 generator as follows,

For two-liter bottles:
•2 cupswater
•2 cups Sucrose(cane sugar)
•¼ teaspoonFleischmann's Active Dry Yeast
•¼ cuptepid (ideally 104ºF) water

My question is, should I be doubling or even tripling this recipe to fill a 2lt bottle most of the way up? in other posts I've read to fill bottle 2/3 full of water, add sugar and baking soda and then the rehydrated yeast. Which is a better formulae?

Be careful using a triple amount of yeast. It will speed up the proces to much.
And use an extra bottle in between so no rubbish will and up in your tank.

I only have a Dutch article about this.
Maybe google translate (or a Dutch course) can help. Pics can help a bit maybe. Hoping it is a bit usable.

 

Sorry. Think I am not allowed to put the link to the article in here.

 

The question becomes- why? Need carbon? Bottled CO2 isn't that expensive, and is certainly convenient. Excel is a little pricey, but also avoids the mess or running a science lab and having an aquarium that looks like it's on a recycling pile .

I've got nothing against DIY, and if you're doing it to learn, great. People should build stuff. Far too many people don't know how to drive a nail, or change a faucet or tire. But you need to balance the trouble with the payoff.

 

CO2 itself is cheap, indeed. Delivering it safely into our tank is expensive.
For the OP. When I tried the DIY yeast/sugar, I used 2 cups of sugar, 1/4 tsp yeast and the two liter bottle filled almost to the top.

 

CO2 itself is cheap, indeed. Delivering it safely into our tank is expensive.
For the OP. When I tried the DIY yeast/sugar, I used 2 cups of sugar, 1/4 tsp yeast and the two liter bottle filled almost to the top.

I've seen small tank CO2 systems that come with everything but the bubble counter for under $25. I guess that's not giving it away cheap, but you also have to value your time when making a DIY system unless you're doing it for enjoyment. (It's true that a nice 'Cadillac' system for a large tank can be an eye opener.) I guess a DIY system as described could be done for around $5, but I don't know how often you need to clean and refill those systems.

 

I do a 2L bottle.
6-7 cups lukewarm water
2 cups sugar
1/4 tsp of yeast
Then shake well.

I refill about every 10 days when it gets clear and stops bubbling.

Time is about 10 minutes per refil. Yeast and sugar are cheap, almost negligble in expense. As is the time. Costs me well under $5 per bottle.

So to answer your question:
Use the recipe I just stated and that aniroc stated.