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Re: [APD] Carbon filtration, DOC & BGA
What is DOC?
----- Original Message -----
From: "S. Hieber" <shieber at yahoo_com>
To: "aquatic plants digest" <aquatic-plants at actwin_com>
Sent: Wednesday, December 17, 2003 8:15 PM
Subject: Re: [APD] Carbon filtration, DOC & BGA
> I haven't found DOC levels to be a cause of BGA -- jsut
> imbalances of NO3 and PO4 -- which could be jsut what I
> understand Tom to have said about nitrate levels and BGA.
> But what you need to fix isn't the choice of media if your
> DOC is too high. And adding carbon would be superfluous if
> the water changes are being done. If large
> waterchange/resets don't work, then there are probably a
> host of problems or imbalances to address such as a filter
> that's gone too long without cleaning, way too many fish,
> something overloading your tank.
> Scott H.
> --- Steve Pushak <teban at powersonic_bc.ca> wrote:
> > . . . high levels of DOC being a factor causing
> > Cyanophyta
> > (Cyanobacteria, blue-green algae) should we rethink
> > conventional wisdom
> > about the use of activated carbon filtration?
> > Granted that regular water changes are important too.
> S. Hieber
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