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Re: Air pumps (was:very mysterious deaths...)
Gitte writes:
> Also...now I am a trifle confused. I thought air pumps were no-no's for
> planted tanks. You switch off filters to reduce turbulence, but doesn't
the
> air pump cause CO2 depletion? Or is this not a problem in the dark?
>
CO2 is not used by plants in the dark, because photosynthesis stops. Plants
produce CO2 at all times, and re-utilize it during the day to make sugar.
Bob Dixon