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Re: [APD] CO2

Maybe one of the pluses from big water changes is the
exposure to the CO2 in the air.


--- Thomas Barr <tcbiii at yahoo_com> wrote:

> Like the CO2 bubbles floating around being counter
> productive, wasteful even...........
> Everyone suggested excess PO4 caused algae for decades
> and still today. 
> I went the other direction.
> But ruling out PO4 was rather simple and easy in a tank,
> what was actually causing algae was more elusive(and thus
> required the more controlled isolated test).........
> CO2 mist, tiny bubbles etc often were considered bad
> since it meant there was some "waste".
> Yet my observations with the Venturi reactor design
> showed otherwise.
> I did not give it that much thought till recently.
> Why did they do so much better than the others even
> though they appeared to waste gas?
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