Re: [APD] Nitrogen source

[Rex Grigg <rex at dsl-only_net>]

At 07:26 PM 10/3/2003, you wrote:

Good old KNO3, aka potassium nitrate, aka saltpeter.

Some people will tell you stump remover, but I have found that stump 
removers that are pure KNO3 are more expensive than real KNO3.  I suggest 
you head to www.litemanu.com and get some KNO3 and some K2SO4 for your 
additional potassium needs.  Also if you are using a lot of N then you 
might need to dose P as well.  Pick up a pound of KH2PO4 to dose phosphates.
> Hi everyone,
>
> I am currently supplementing my 240 gallon tank with one of the commercially
> prepared planted aquarium nitrogen supplements. I test with a Lamotte test
> kit.
>
> Are there any cheaper sources of nitrogen that would be comparable to the
> commercial products that I could use and still get accurate readings with the
> Lamotte? I am currently using a good bit of N. Hopefully, as I introduce more
> fish and the tank ages I may need to use less, but for right now it is my 
> single
> biggest additive cost.
>
> I was wondering if one of the garden type Nitrogen sources would be a good
> substitue? The aquarium supplements are pure, I assume. That would be my only
> concern about using something not aquarium specific, other ingredients that
> might be harmful in a planted tank.
>
> The tank is 240 gallons, light is metal halide, sump setup, CO2 injection.
>
> Thanks for any help!
>
> Dave
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