best diy mixture for diy co2 set

[kendrick_86]

hi bros, i am currently looking for the best proportion of mixture which i can add to produce the most efficient and longest lasting co2. the current ingredients that i have are fine sugar, bicarbonate of soda and instant yeast. any kind bros to help me here?

Thanks...

[winston77]

How not try to use the search engine here?

I have seen formulas using rice to lengthen the production of CO2 though.