It's really all dependent on how much yeast and sugar is supplied in the bottle. Since the 2L bottles types can hold more of both, the reaction will be last longer, and have a higher production rate in the short term (2 weeks) if supplied with more yeast (3/4 tsp).
You'll see an longer reaction, and increased CO2 production if you switch to the 2L bottle, and add a larger amount of yeast than recommended. This will shorten the life span of the CO2 from 3-4 weeks to 2 weeks, yet production will be dramatic more.
As Sean stated, wine yeast will also enhance the life of the reaction.
I recommend using (2) 2 liter bottles T-ed together for maximum CO2 production.
-John N. |