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Re: [APD] RE: DOC and BGA

In my slow grow tanks, if it looks like things are getting
a bit out of whack, I might test and find the NO3 or PO4 is
way too high or low and do a water change and reset. Or I
might just do the water change -- it's about as easy as
testing since my slow grows are relatively small tanks.

I suppose this marks me as some kind of cheater -- doing
occassional water changes on slow grows but it's an easy
way to deal with water quality, at least for me.

If the DOC is getting high, would that not show up with a
drop in pH do to the formation of acids -- storng buffering

Scott H.
--- Thomas Barr <tcbiii at earthlink_net> wrote:
> > 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.
> Yes, but in tanks like a non CO2 tank that does not get a
> water change for
> several months, this plays a large role(plants, algae
> etc).
> DOC is a big player there. 
> Certain algae are corrleated with higher DOC's in nature.
> We rerally do not know about aquariums with high DOC and
> their effects on
> algae species. 

S. Hieber

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