Re: [APD] c02 in a 5.5

["S. Hieber" <shieber at yahoo_com>]

I' pretty sure that the amount of yeast you start doesn't
determine anything more than how fast the fermentation
bottle gets up to speed -- up to maximum populatin that the
environment can support. Given the doubling rate for yeast
(about 2 or less hours under good conditions), it doesn't
matter how much you start with by the second day or sooner
-- by then the population will have maxed out from even the
smallest starting culture.

Scott H.

--- Vaughn Hopkins <hoppy1 at surewest_net> wrote:

> When I used DIY yeast CO2 I used a 3 liter bottle with 3
> cups sugar and 
> 3/8 tsp of yeast, plus nothing else.  I got that recipe
> from those who 
> used 2 liter bottles with 2 cups sugar and 1/4 tsp yeast
> (regular bread 
> yeast).  It gave me a bubble about every second and
> lasted a couple of 
> weeks.  I think you have far too much yeast in your
> bottle.  In fact 
> for such a small tank I would use 1/8 tsp yeast, two cups
> sugar and no 
> baking soda or salt.  The quantity of  yeast controls how
> fast the CO2 
> is produced and the amount of sugar determines roughly
> how long it 
> lasts.  At least that is how I understood it.
> 
> 
> On Wednesday, June 15, 2005, at 10:07 AM, James H wrote:
> 
> > im injecting co2 through the yeast method into my 5.5g
> tank and im
> > having problems with the co2 being at too high levels
> and its starting
> > to stress the fish especially my cories.  im using a 2l
> pop bottle
> > with 3/4c sugar 1/2tsp yeast and 1/4tsp baking soda and
> a pinch of
> > salt, without the salt i get way too much co2 a
> constant stream infact
> > and if i add anymore than a pinch i get no co2 at all,
> im wondering if
> > anyone knows how to lower the production or should i
> get a smaller
> > bottle and reduce the recipe?
> > James
> >
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