Yeast CO2 production rate (was: Re: Aquatic Plants Digest V4 #708)

[A Ling <aling at capu_net>]

   When I was using yeast to produce CO2, I also noticed a moderately
strong
temperature dependence to the production rate.  During the day, when the
house
temperature was higher, the bubble rate was higher.  At night, it was
lower.
This variability was even stronger when for a time the generator sat on
a sunny
windowsill.  Perhaps you could move your generator so that its
temperature 
stays lower?
   I can't see how a little salt in your generator could hurt your
aquarium
plants, but don't know if it would partially quench the fermentation. 
But it 
seems easy enough to try.

"Bonds" <akgoldrush at hotmail_com> wrote in apd v4 #709:
> I have been using the recipe from The Krib for DIY CO2 injection for about a
> month now.  It seems to work pretty well for me, but stops producing after
> about a week or two.  The mixture is being heated to about 80 degrees F by
> my main light on the tank 10 hours a day.  The question I have is what can I
> do to make it last longer.  Could adding a little salt to it help?  I've
> heard that salt is added to rising bread to slow the yeasts' fermentation
> and stop it from petering out quickly.  Would this hurt my plants?
> Thanks...
> 
> - -tom

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