Re: [APD] Re:NO3 Management

["Scott R.H." <irons_21 at yahoo_com>]

I bet this would work well in a sump system.  Like a
tray at the end of a longer sump.  Wouldn't a sump
style Deep Sand Bed work just as well though?

I don't have a salt tank yet.  While doing some
research, one thought to reducing no3 in the salt tank
is a sump with a long deep sand bed.  The idea is to
create an anaerobic area to create N2 gas with out it
being in your tank.  Not sure how well this works, but
it's an idea.

--- Paul Krombholz <krombhol at teclink_net> wrote:
>     
>      * From: Phil Bunch <pbunch at cox_net>
>     
> >
> >I took note of the suggestion to use an out-of-tank
> hydroponic filter as
> >one means of removing NO3 from aquarium water. Has
> anyone one designed an
> >out-of-tank anaerobic system for nitrogen removal?
> I can see some problems
> >that would have to be overcome but it sounds
> possible. Possibly a
> >deoxengenator on the input and return through an
> air reactor?
> 
> I have had an idea for a nitrate remover, and I have
> put one or two 
> of them in an aquarium, but I have not tested NO3 
> levels to see if 
> the thing removes it.    Actually, I was thinking of
> it as a possible 
> CO2 producer, and it does produce a steady supply of
> bubbles, but I 
> do not think that very much of the gas produced was
> CO2.  If it 
> wasn't producing CO2, perhaps it was producing
> nitrogen (which would 
> have had to have come from nitrate reduction).  The
> only other  gas 
> that it could produce would be methane.  I suppose
> that one could 
> capture some and see if it burns. 
> 
> WARNING! this is another one of my weird ideas that
> do not exactly 
> set off a stampede of others to try them out, such
> as CO2 additions 
> from my own exhaled air,  and using capillary tubing
> to control flow 
> of CO2 from a pressurized tank rather than a needle
> valve. 
> 
> Take a shallow tray and put about 1/4 inch of
> uncooked oatmeal flakes 
> on the bottom.  Cover with 1/2 inch to 1 inch of
> gravel.  Place in 
> aquarium.  The oatmeal will become intensely
> anaerobic, but the 
> gravel covering will limit exchange with the water. 
> If the water, 
> itself, becomes cloudy  then you need a deeper
> gravel layer or a 
> smaller tray.   Nitrate that diffuses into the
> gravel should be 
> converted to atmospheric nitrogen by denitrifying
> bacteria.  The 
> question is, how efficiently would such a set-up
> remove nitrate? 
> Only testing will tell. 
> 
> -- 
> Paul Krombholz in soggy central Mississippi, cooling
> down to below freezing.
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