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Re: [APD] Barr Method Question

I test often for PO4 and NH3 and adjust dosing until things
get stable at target levels. This takes a few weeks at most
and then testing isn't needed anywhere near as often. I
think it's mainly an issue with high fish loads, which for
me, produce a lot of nitrates -- enough that I don't need
to dose nitrate chems in my large tank at all -- but not
enough PO4 for balance.  So I basically take Potassium
nitrate out of the dosing.

Hope that's some help,
Scott H.
--- rockel <rockel at attglobal_net> wrote:
>   Hello,
> I have decided to try the "Barr Method" but have
> question. I am 
> concerned about nutrient build up in the tank. Even with
> 50 % weekly 
> water changes and assuming no plant up-take (bad
> assumption I know), the 
> nutrient levels would continue to rise in the tank. How
> does one 
> determine plant up-take (is there a rule of thumb?) in
> the tank without 
> testing since Thomas Barr has indicated that testing
> isn't really 
> necessary except to determine CO2 levels. Is it just a
> matter of testing 
> until you get a "feel" for the nutriant levels in the
> tank over a period 
> of time and then dose base on the your experience and
> appearance of the 
> plants. Any assistance would be of help.

S. Hieber

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