[Fishboy1230]

What is your most effective, highest, and/or longest lasting Diy Co2 formula?
( ex. x cups of sugar, x tablespoons of yeast, and x table soons of baking soda):fish:

 

[Fishboy1230]

I'm asking since i have 2- 2liter empty soda bottles already hooked up but i am unsure of the mixture.

 

[frozenbarb]

there was past thread about co2 mixture,

 

[Fishboy1230]

budge, does anyone have a mix?

 

[Storm_Rider]

there was past thread about co2 mixture,

:iamwithst

 

[cbennett]

2-liter Bottle:
2 cups sugar
1/8 teaspoon CHAMPAGNE yeast
1/4 teaspoon baking soda
tepid water up to bottle 'shoulder'

lasts 1 month for me

 

[Fishboy1230]

Do you use any sort of valve to slow down the output, because I am worried that it will be too much for my 20gallon.

 

[tazcrash69]

Do you use any sort of valve to slow down the output, because I am worried that it will be too much for my 20gallon.

If you put a valve on it, you risk blowing the CO2 bottle, makes a mess.

You will be better off tailoring your recipe.

Also, check here:
http://www.plantedtank.net/forums/planted-tank-faq/10071-wanted-your-best-hagen-co2-recipes.html
and here:
http://www.plantedtank.net/forums/planted-tank-faq/23742-comprehensive-diy-c02-index-recipes-reactors.html

 

[Fishboy1230]

Thanks!!!!

 

[bsmith]

i use 2 1L bottles on my 29g, so i would assume that 1 2L bottle would work well for your application. the mix i use is 1c sugar 1/8 tsp yeast (bakers) and water to till the bottle gets smaller. this mix lasts about 2 weeks for me and using my xp1 as a diffuser gives me around 35ppm of dissolved co2 in the tank.

B

 

[Bbc84]

I use champagne yeast in a 2L +3L and go with a 1cup of sugar / Liter. Lasts about 6 weeks until it gets too weak and needs replacement.