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Re: wet-dry filter and co2
George Booth did some study of this. Check out the article
"Concerned about CO2 loss in a trickle fitler? Don't be!
CO2 Loss in Large Aquariums "
at his site:
I believe Erik also has the article posted on The Krib. Search and
have fun there.
Probably part of the equation is that water flowing into the filter
will impart O2, as well as CO2 to the atmosphere within. So CO2 will
not eliminate O2 from the trickle filter--at least under any practical
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