Re: [APD] Re: CO2 use - off at night? -- or - plugging timers

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

One might have expected all that water sprite to suck up
the CO2 -- but it would seem that more CO2 passes to the
air than to plants and your watersprite impeded that gas
exchange with the air.  Nice example.

Scott H.
--- Clint Brearley <clint_brearley at telstra_com> wrote:
> 
> Giancarlo Podio <gp at isaconsulting_com>
> > In theory that works, but it's assuming that the plants
> are the only
> > "consumers" of CO2. In my experience thats not the
> case, gas 
> > exchange has
> > proven to be the biggest consumer of CO2 in my tanks to
> date, and that
> > obviously doesn't slow down at night. Unless you have a
> very low 
> <snip>
> 
> I had an experience recently that highlights the
> importance of gas exchange in maintaining CO2 levels. I
> let some watersprite just about cover the surface of my
> tank and my pH went down from 6.6 to 6.2 (KH 4.5) with no
> change in bubble rate (running 24/7), I assume from the
> reduced gas transfer at the waters' surface.
> 
> Clint Brearley
> Melbourne, Australia
> 
> 
> 
>                                                          
>             
> 
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=====
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Tired of filling that aquarium all the way to the top? Ready to try something a little different? Think less water, more options. Think paludarium.

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http://www.aquariumdesigngroup.com/aquascapes/aquascapes_paludariums.htm

SEE the Senske submissons to the AGA Annual Aquascaping Contests at http://showcase.aquatic-gardeners.org/2004.cgi

HEAR and SEE Mike talk about paludarium design at The 5th AGA Annual Convention. Details/Registration at www.aquatic-gardeners.org & www.gwapa.org
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