Remember to use warm water when mixing solution. And if possible, keep
solution warm...this will prolong the reaction. Some people put their
bottles in pail of water with an aquarium heater. Simply, cold---slows
reaction, warm---speeds it up, do not use hot water however.

Dave.

"Dances With Ferrets" wrote in message
om...
For any who may be familiar with the 2-liter-soda-bottle method of CO2
production... using baking soda as a buffering/stabilizing
compound... Could someone tell me what the optimum mix of water,
yeast, and baking soda would be using this method? (in case it makes
a difference in the formula, the yeast culture in this case is an
ethanol-resistant strain commonly used in wine-making). Also, how
often would one recommend refreshing the solution in the bottled
culture? Or would it be best to discard the culture and start a new
one? If discarding, how far in advance should the new culture be
started to supply a consistent amount of CO2?